Tag Archives: Neutral

Skilhunt M300 V2

The M300 V2 is a compact general-purpose flashlight running on a single included 21700 battery.Includes a colourful build and versatile user interface.

  1. Introduction
  2. Manufacturer Specifications
  3. Package Details
  4. Build
  5. User Interface
  6. Circuit Measures
  7. Emitter Measures
  8. Beamshots
  9. Testing Results
  10. Runtimes
  11. Pros and Cons
  12. Overall Rating
  13. Preliminary Conclusions
  14. Acknowledgement

Introduction

I remember when Skilhunt first came on the scene, over a decade ago. Their early lights had a distinctive rakish design, with cut-outs showing gold-plated brass heatsinks (I believe I referred to them at the time as a steam-punk aesthetic). I was glad to see they are still around, upon my return to reviewing. I see that they have moved to a more minimalist build, with a good number of headlamp models, and a strong focus on built-in magnetic charging docks.

This is the first of two Skilhunt lights that I have on hand for testing (the H300 review will be coming soon). A really nice feature is the option to select your own emitter – with a good range of options. Case in point for the M300: you can select between CREE XHP50.3 HI Cool White 6500K, CREE XHP50.2 HD Neutral White 5000K, CREE XHP50.2 HD Ra90 High CRI 5000K, and Nichia 144ART R9050 sm453 4500K.

I’ve opted to go for the XHP50.2 HD Neutral White 5000K for this review, for the highest maximum output of 3000 lumens. Normally, I would have opted for one of the High CRI versions, or the cool white HI emitter (for better throw and reduced chromatic aberrations). But it’s good to compare maximum output versions for comparative purposes, and I was glad to see the max 3000 lumens was available with the XHP50.2 neutral white.  As always, you can select the emitter option that best suits your needs.

Let’s see how it compares in my testing.

Manufacturer Specifications

Note: as always, these are simply what the manufacturer provides – scroll down to see my actual testing results.

FeatureSpecs
MakerSkilhunt
ModelM300 V2
EmitterXHP50.2 HD Neutral White
Tint5000 K
Max Output (Lumens)3,000
Min Output (Lumens)1
Max Runtime200 hrs
Max Beam Intensity (cd)12,000 cd
Max Beam Distance (m)219 m
Constant Levels7
FlashingStrobe 1/2/3
Battery1x21700
Weight (w/o battery)75 g
Weight (with battery)-
Length120 mm
Head Diameter29.5 mm
Body Diameter-
WaterproofIPX-8 1m

Package Details






The light comes in a fairly standard shelf-presentation style box, with a description of the features and characteristics printed on it. Inside is a professional looking package, with the cover tab under the plastic tray holder. My sample came with an extra light carrying pouch in a small plastic bag.

Inside the box, I found:

  • Skilhunt M300 V2 flashlight
  • Skilhunt BL-250 5000mAh 21700 battery (optional)
  • Wrist lanyard
  • Bi-directional pocket clip
  • USB magnetic charging dock
  • 2 Spare O-rings
  • Manual

It’s a decent package, consistent with other lights of this class. As always, I would have liked to have seen a holster, but at least they included a bi-directional pocket clip and a carry pouch. This is a good set of extras.

Build


From left to right: Skilhunt 18650 (3500mAh), Wurkkos 21700 (5000mAh), Acebeam 21700 USB-C (5100mAh), Acebeam E70 Mini, Armytek Wizard C2 Pro Nichia, Acebeam E70, Armytek Wizard C2 Pro Max, Convoy S21E, Fenix E35 v3, Imalent MS03, Skilhunt H300, Skilhunt M300 V2, Wurkkos TS22.











The M300 is a solid build, with lots of design elements to help with grip, including sharp concentric rings on the body and tailcap, and with large cut-out ridges. There is also a raised metallic blue ring surrounding the switch, and a magnetic charging dock on the opposite site of the head. Ironically, while these both help with grip, it can make identifying the switch by feel alone difficult (i.e., hard to tell the two apart by touch). But a simple solution is simply to squeeze both areas with your thumb and forefinger simultaneously to activate the light, if you can’t see what you are doing.

Along with the switch and dock areas, there are relatively flat cut-outs on the other two sides of the head, helping limit the roll of the light (better than I expected, frankly). That said, if you really want to prevent roll you are going to want to attach the removable pocket clip (which would also further help with grip, not that it really needs it). I like the bi-directional design of the clip, so that you can carry it bezel up or down.

I would say the overall size is about typical for the compact 1×21700 class – not the smallest, but also not largest I’ve seen. Handfeel is good, it is comfortable to hold and use.

The electronic switch has blue and red LEDs underneath it, which can be used to signal status of the light or battery. Switch feel is good, with a standard traverse/tactile feedback for an electronic switch. The metallic blue switch surround is distinctive looking.

One nice thing about magnetic charging docks is that waterproofness is not a concern – the light looks quite spashable/dunkable (although note that I do not test for this in my reviews).

Tailstanding is very stable, thanks to the flat tailcap (there is a side cut-out to allow you thread the basic wrist lanyard through). Tailcap threads are square-cut and anodized, with good feel. I always recommend you keep a light stored locked out when not in use. Thanks to the anodized tailcap threads, you can do this easily by a simple twist of the tailcap. There is a decently robust tailspring in the tailcap, suggesting higher current draws won’t be a problem.

Anodizing is a distinctive gun-metal gray colour, and looks to be good quality on my sample with no damage or issues, in matte finish. Skilhunt reports it is type III (hard anodized), and I see no reason to doubt that. I would say the colour goes well with the metallic blue switch surround and bezel ring.

Inside, my sample came with the optional Skilhunt-branded button-top 5000mAh 21700 battery. The battery is labelled as high-drain (15A), so that should similarly not limit maximum output.

The USB charging dock also comes with blue and red LEDs, to signal charging status. The magnet has a strong pull, and locks into place easily.




My M300 came with a XHP50.2 HD emitter, in neutral white. The reflector is fairly shallow and textured (moderate orange peel, OP). However, as expected, there is noticeable tint/colour shifting across the periphery of the beam (a well-known issue with HD emitters of the XHP family). This one seems more pronounced than most, with a relatively neutral white hotspot surrounded by an extensive corona that is very yellowish-green, and then a relatively cooler spill beam with a purplish edge. Scroll down to my Emitter Measures section more details and a discussion. There is a mild purplish anti-reflective (AR) coating on the lens.

The bezel is crenelated stainless steel, with a stylish metallic blue colour to match the switch surround. Scalloping is not too aggressive, so you can headstand stably.

User Interface

The M300 uses the latest version of the Skilhunt user interface (UI), and has a reasonably good number of modes and features. You get two Low modes, three Regular modes (two Med modes, one High mode), two Turbo modes, and three Strobe modes – organized into those four mode sets.

One comment to make up front – the mode level labels are different from most lights in that the lower number for a given level is actually the higher output (so, for example, T1 is brighter than T2). That means the constant output modes, in sequence, are: L2 > L1, M2 > M1 > H, and T2 > T1.

The manual doesn’t describe the three strobe modes, but for sake of this review I will refer to them as S3 = Strobe, S2 = SOS, and S1 = Beacon.

Let me break down the full interface for you:

From OFF:

  • Press-and-hold: Turns On in memorized Low mode (L2 or L1).
  • Single-click: Turns On in memorized Regular mode (M2, M1, or H).
  • Double-click: Turns On in memorized Turbo mode (T2 or T1).
  • Triple-click: Turns on in memorized strobe mode (S3, S2, or S1).
  • 4 clicks: Activates the electronic Lockout mode.
    • Press-and-hold for momentary Moonlight (i.e., lowest Low, L2)
    • While in lockout, the switch indicator light will flash red every second, but that can be toggled off/on with a double-click.

From ON:

  • Press-and-hold: Cycle to the next level within the current mode level set (constant output modes only, doesn’t work for Strobe).
  • Single-click: Turns Off.
  • Double-click: Jumps to the memorized Turbo level (from Regular modes only), or back to Regular modes if already in Turbo (note this doesn’t work from Low modes or Strobe modes)
  • Triple-click: Jumps to the memorized Strobe mode (from Regular or Turbo), or back to most recent Regular or Turbo if already in Strobe mode.

Strobe modes:

  • Triple-click: Turns On in memorized Strobe mode.
  • Double-click: Cycles through the Strobe modes in sequence:
    • S3 – Strobe
    • S2 – SOS
    • S1 – Beacon

Mode memory:

Yes, each mode set retains its own memory for the last level selected in that mode set.

Shortcuts:

  • To Low (L2 or L1): Press-and-hold from Off.
  • To Turbo (T2 or T1): Double-click from Off or when On in Regular mode.
  • To Strobe (S1, S2, or S3): Triple-click from Off or when On in Regular or Turbo mode.

Low voltage warning:

When the battery is running very low (<3.0V according to the manual), the switch indicator light will flash red, and the main emitter will flash every couple of seconds. The light will shut off at 2.7V according to the manual.

Lock-out mode: 

  • 4 clicks from Off: Activates the electronic Lockout mode.
  • Physical lockout is also possible by simply unscrewing the tailcap.

Battery indicator:

Yes. The LED under the switch indicates the battery status for the first ~5 secs after turning on:

  • Solid Blue: >80% Battery power remaining.
  • Flashing Blue: 50-80% Battery power remaining.
  • Solid Red: 20-50% Battery power remaining
  • Flashing Red: <20% Battery power remaining.

These seem reasonable to me, and similar to the Sofirn C8L that I recently reviewed.

Video Overview:

Please see the video below, which walks you through the common UI and build features of this light and its H300 headlamp sibling:

Reviewer Comments:

Like many of the recent lights I’ve reviewed, I find this UI to be very reasonable, and relatively versatile. Of course, you are never going to please everyone with any given UI (e.g., I would like to see double-click reliably jumping to Turbo, and have the Low modes as part of a regular sequence without having to go through off first). But these are really quibbles, the light does reasonably well.

One small thing I would like is the ability to independently turn on the the blue switch indicator, to serve as an additional “moonlight mode”. This is something the Anduril-based lights allow (if implemented, like on the Sofirn IF25A), and some other new UIs (like the Wurkkos TS22).

Allowing momentary L2 when in the electronic lockout is a nice touch. But as always, I recommend locking out the light at the tailcap when not in use.

Circuit Measures

Pulse-Width Modulation (PWM):

L2:
Lo

M2:
Mid

H:
Hi

T2:
Turbo

T1:
Turbo

There is no sign of PWM on any level – the circuit appears to be fully current-controlled. This is also no sign of high-frequency noise at any level. This is refreshing – although PWM is very rare nowadays, it is not uncommon to see some (visually-undetectable) circuit noise.

Strobes:

S3 – Strobe:


S3 Strobe alternates between 6 Hz and 14 Hz strobes (1 sec for 6Hz, 3 secs for 14 Hz).

S2 – SOS:

S2 is clearly a SOS mode.

S1 – Beacon:

S3 is a 1hz slow signalling strobe.

Charging:

The magnetic charging dock switches from blue (when charger power is provided) to solid red when connected and charging the M300. The dock switches back to solid blue when the charging is complete.

In my testing, resting voltage of the cell was ~4.12V at termination. This is lower than typical, but is easier on the cell. Note that the charging dock won’t initiate a charge cycle if the cell is above 4.0V resting, just like the Armytek charging dock.

Resting voltage <3.0V

Resting voltage >3.0V

The M300 doesn’t really have a two-stage charging feature, but it does start off at a lower charge rate when the cell is heavily depleted <3V (1.55A shown above, rises to 1.62A within a minute or so).

Standby / Parasitic Drain:

I measured the standby current as 25.4 uA. This is an extremely low standby drain, and will not appreciably affect the light (i.e., it would take ~22.5 years to fully drain the cell). Regardless, I always recommend you lockout the light when not in use – either by electronic lockout, or better yet physically by twisting the tailcap.

Emitter Measures

In this section, I directly measure key emitter characteristics of my sample in terms of colour temperature, tint, and colour rendition. Please see my Emitter Measures page to learn more about what these terms mean, and how I am measuring them. As tint in particular can shift across levels, I typically stick with the highest stably regulated level for all my reported measures.

As explained on that page, since I am using an inexpensive uncalibrated device, you can only make relative comparisons across my reviews (i.e., don’t take these numbers as absolutely accurate values, but as relatively consistent across lights in my testing).

M300 on H (Hi):

The key measures above are the colour temperature of ~4420K, and a moderately positive tint shift (+0.0117 Duv) to yellowish at this temperature. For CRI (Ra), I measured a combined score of 67.

These values are very consistent with the rated specs for the neutral white XHP50.2 emitter on my sample, and match my visual experience of this light.

Note that the standard measures above refer to the hotspot specifically. As you move away, there is always some variation in colour temperature and tint with XHPx0.2 emitters. Since my return to reviewing, I’ve found the XHP50.2 emitters are particularly prone to this, and I did notice significant tint/colour shift across the beam on this particular sample. As such, I decide to do some some additional measures.

Below are are two beamshots on a white wall of the Hi (H) level. I’ve chosen two different exposure times to better show the hotspot and spill. Camera is set to daylight white balance, and this matches pretty well to what I see by eye. I’ve also taken additional colour temp/tint readings at the various points identified:


Here are those specific measures again:

Hotspot: ~4400K, Duv +0.0117 : Neutral-warm white, somewhat yellowish tint.

Corona: ~4150K, Duv +0.0148 : Slightly warmer white, even more yellowish tint.

Mid-spillbeam: ~4950K, Duv +0.0025 : Neutral-cool white, no significant tint shift at all.

Spillbeam edge: ~6000K, Duv -0.0003 : Cool white, no significant tint shift.

Note that the spillbeam edge is much lower intensity (and thus more variable on the lightmeter). It also doesn’t show up well at the exposure settings above – but it definitely appears to the eye that there is a cooler white ring all along the outside edge. XHPx0.2 emitters are well known to produce these, although I suspect this is enhanced here due in part to the purplish AR coating on the lens and to reflections off the blue stainless steel bezel ring (both of which are “cooling” the CCT tint readings and providing this subjective edge effect).

Again, these colour temp/tint shifts are predominantly a characteristic of the XHP50.2 emitter selected here. But as this sample has a more significant variation in the beam profile than I typically notice, I’ve provided the extra context above. As an aside, this is why I generally prefer XHPx0.3 HI emitters, as they don’t show as severe chromatic variation.

Note that you can even see this effect somewhat in my outdoor beamshots below as well.

Beamshots

All outdoor beamshots are taken on my Canon PowerShot S5 IS at f/2.7, 0.5 secs exposure, ISO 400, daylight white balance. The bend in the road is approximately 40 meters (~45 yards) from the camera. Learn more about my outdoor beamshots here (scroll down for the floody light position used in this review).

Click on any thumbnail image below to open a full size image in a new window. You can then easily compare beams by switching between tabs.



As you can see above, the M300 has a balanced beam, consistent with its smaller reflector (i.e., more on the floody side). Output seems particularly high for 3000 lumens light.

Testing Results

My summary tables are generally reported in a manner consistent with the ANSI FL-1 standard for flashlight testing. In addition to the links above, please see my output measures page for more background.

All my output numbers are based on my home-made lightbox setup. As explained on that methodology page, I have devised a method for converting my lightbox relative output values to estimated lumens. My Peak Intensity/Beam Distance are directly measured with a NIST-certified Extech EA31 lightmeter.

M300 Testing Results

ModeSpec LumensEstimated Lumens @0secEstimated Lumens @30 secsBeam Intensity @0secBeam Intensity @30secsBeam Distance @30secsPWM/Strobe FreqNoise FreqCharging Current <3VCharging Current >3VParasitic DrainWeight w/o BatteryWeight with BatteryCCT (K)DuvCRI
L210.90.9---NoNo1.55 A1.65 A25.4 uA75 g147 g---
L164.14.1---NoNo1.55 A1.65 A25.4 uA75 g147 g---
M2606060---NoNo1.55 A1.65 A25.4 uA75 g147 g---
M1230245245---NoNo1.55 A1.65 A25.4 uA75 g147 g---
H610610610---NoNo1.55 A1.65 A25.4 uA75 g147 g4,4200.011767
T21,1301,1501,150---NoNo1.55 A1.65 A25.4 uA75 g147 g---
T13,0003,6503,35015,400 cd14,200 cd238 mNoNo1.55 A1.65 A25.4 uA75 g147 g---
S3------1 HzNo1.55 A1.65 A25.4 uA75 g147 g---
S2------SOSNo1.55 A1.65 A25.4 uA75 g147 g---
S1------6-14 HzNo1.55 A1.65 A25.4 uA75 g147 g---

For most of the levels, there is a remarkably good concordance with my lightbox. The one exception is the T1 level – where I actually measured slightly higher output than the specification.

By the same token, my NIST-calibrated luxmeter actually reports slightly higher beam distance measures as well, showing these results are consistent. An impressive showing!

I’m also happy to see a ~1 lumen “moonlight” low mode here (i.e., L2). I would prefer a true <1 lumen moonlight though.

To view and download full testing results for all modern lights in my testing, check out my Database page.

Runtimes

As always, my runtimes are done under a small cooling fan, for safety and consistency. To learn more about how to interpret runtime graphs, see my runtimes methodology page.

Max

Hi

Med

Skilhunt shows both excellent output/runtime efficiency and regulation, consistent with a top-quality current-controlled driver.

As you can see above, the XHP50.2-equipped M300 shows overall output and runtime on T1 and T2 that is very similar to the XHP50.3-equipped Sofirn C8L (another very efficient light). As expected, XHP50.x lights show output performance intermediate to the XHP70.x/SST70-equipped lights and SFT40-equipped lights.

These results are all the more impressive when you consider there is a ~1 lumen “moonlight” mode (L2) included on the M300. Most of the other lights shown above don’t go as low, so this is a plus for the M300.

The regulation pattern is also impressive. Along with perfectly flat and stable outputs, you also get a reasonable amount of time at lower levels before the light shuts down. This is plenty of warning to stop and recharge.

To better show the Turbo step-down pattern on T1/T2, here is a view of just those two levels on this light:

Max-extended

Pros and Cons

ProsCons
Light has excelent output/runtime efficiency, consistent with other good current-controlled lights with the XHP50 emitter.User interface is fairly sophisticated, and reasonable for the class, but it does have some small quirks and limitations.
Circuit shows excellent regulation, with stable runtimes and reasonable step-down levels and duration.There is a noticeable colour temperature/tint shift across the spillbeam with this XHP50.2 emitter (you may want to consider an alternate choice from Skilhunt).
Although not a true "moonlight" mode, the lowest output is reasonable and effective at ~1 lumen.Magnetic charging dock performance is good and consistent with others, and won't initiate a charge >4.0V resting voltage.
Compact build with good quality and decent handfeel.
Includes a bidirectional pocket clip

Overall Rating

Preliminary Conclusions

The Skilhunt M300 ticks a lot of boxes for me. It has a high quality build, with a thoughtful design and some nice stylistic touches. Switch feel is good, and the user interface is very reasonable for the class. The charging dock worked well in my testing, consistent with others who use this magnetic design.

In terms of the circuit, the M300 is a great performer for the compact 1×21700 class. Higher output levels and runtime efficiency are on par with other good quality, constant-current circuits coupled with XHP50.x emitters. Regulation patterns are flat and stably regulated. The light even comes with a near “moonlight” level of ~0.9 lumens in my testing, which is better than most lights nowadays. Very respectable performance – although I feel you need to have a proper <1 lumen moonlight mode to earn a full 5 stars on a general purpose EDC light.

The main thing I’m not crazy about on my sample is the pronounced colour tint/temperature shift across the beam profile. XHP50.2 HD emitters are known for their chromatic aberrations, so I expected this going in – although it is particularly pronounced here. The purplish AR lens coating and reflections off the blue stainless steel bezel ring may also be contributing to a relatively cool outer edge to the spillbeam.

This is the price you pay for selecting the emitter choice that produces the maximum output in this model (which I thought was important, in order to fairly compare to other lights I’ve reviewed with that emitter). But it is great that Skilhunt offers so many emitter options here – personally, I recommend you go with one of the high CRI options instead, or the XHP50.3 HI if you really want max output with minimal chromatic aberrations.

The M300 is a very nice light, well implemented, but there are some small issues that could be tweaked to give it a top score (i.e., true moonlight, some interface improvements, higher termination level for the dock, etc.).

I’m glad to see Skilhunt is still around and producing such quality lights.

Acknowledgement

The M300 V2 was supplied by Skilhunt for review. As always, all opinions are my own and the light received the same rigourous and objective testing as all other lights that I have reviewed. At the time of review, this light retails for ~$80 USD (~$105 CDN).

Wurkkos TS22

The TS22 is a very compact but high output general-purpose flashlight, running on a single included 21700 battery. It features a well-regulated and efficient boost circuit for maximum performance.

  1. Introduction
  2. Manufacturer Specifications
  3. Package Details
  4. Build
  5. User Interface
  6. Circuit Measures
  7. Emitter Measures
  8. Beamshots
  9. Testing Results
  10. Runtimes
  11. Pros and Cons
  12. Overall Rating
  13. Preliminary Conclusions
  14. Acknowledgement

Introduction

Upon my return to reviewing this year, I quickly discovered that Wurkkos is a well-regarded newer “budget” flashlight maker. Indeed, like Convoy and Sofirn, I soon started receiving user requests to review their lights as well. The Wurkkos TS22 was always on my radar, given my initial focus on compact, EDC-style 1×21700 lights. I’m pleased that Wurkkos agreed to send me this model for review.

Building on their earlier popular FC12 and TS21 models, the TS22 features the high-output XHP70.2 emitter, and is rated for max output up to 4500 lumens. Note that my sample has a neutral white colour temperature (5000K) while still rated at the same 4500 max lumens as the cool white (6000K) version. FYI, according to the Wurkkos website, I see a new XHP70.3 HI emitter option (in cool white only) is also now available.

That’s a lot in a compact light, so I’m curious to see how it compares in my testing.

Manufacturer Specifications

Note: as always, these are simply what the manufacturer provides – scroll down to see my actual testing results.

FeatureSpecs
MakerWurkkos
ModelTS22
EmitterXHP70.2
Tint5000 K
Max Output (Lumens)4,500
Min Output (Lumens)10
Max Runtime280 hrs
Max Beam Intensity (cd)9,150 cd
Max Beam Distance (m)191 m
Constant Levels5
FlashingStrobe
Battery1x21700
Weight (w/o battery)95 g
Weight (with battery)-
Length122 mm
Head Diameter28 mm
Body Diameter-
WaterproofIP68 2m

Package Details





One thing you may notice is the packaging looks virtually identical to the Sofirn C8L I just reviewed. Indeed, there are many aspects to the lights that also seem identical (see Build details below), making it clear to me that Wurkkos and Sofirn are sharing the same manufacturing plant (at least for these two models). Researching online, it seems the two firms have an association, with Sofirn providing the contract manufacturing capabilities for Wurkkos (though Wurkkos is a separate company).

The second thing you’ll notice is that a corner of the box on this sample got heavily dented/damaged in shipping (it was just wrapped in a waterproof packaging with no extra protection). But that’s just fine – the box is made of very hard cardboard with cut-out form inserts inside, so nothing important got damaged.

The box comes with a lot of printed specs and a clear separation of items and components inside (reminds me a bit of modern cell phone packaging). Inside the box, I found:

  • Wurkkos TS22 flashlight, with stainless steel pocket clip attached
  • Wurkkos-branded 5000mAh 21700 battery
  • Wrist lanyard
  • USB-C charging cable
  • 2 Spare O-rings
  • Manual

It’s a decent package, consistent with other lights of this class. I particularly like the included bi-directional pocket clip, a nice touch given the low price.

Build


From left to right: Skilhunt 18650 (3500mAh), Wurkkos 21700 (5000mAh), Acebeam 21700 USB-C (5100mAh), Acebeam E70 Mini, Armytek Wizard C2 Pro Nichia, Acebeam E70, Armytek Wizard C2 Pro Max, Convoy S21E, Fenix E35 v3, Imalent MS03, Skilhunt H300, Skilhunt M300 V2, Wurkkos TS22.








The TS22 is a nice and solid build, with distinctive ridged cutouts along the body tube. This provides excellent grip without using actual knurling (and so, will be easier on fabric/clothes). Grip is especially good with the clip attached. It feels very solid and high quality, similar in handfeel to the Acebeam E70 (but a little smaller and lighter overall).

However, the light it most reminds me of is the Sofirn C8L that I recently reviewed. Just like I noted for the packaging above, I’m struck here by how the electronic switch cover looks and feels identical. The tailcap has the same battery orientation label (as well as the same body certification labels, the same heat warning on the head, etc). Even the base of the circuit board in the heads looks very similar. Although the actual ridge detailing is different, it is clear these two models are produced at the same manufacturing plant.

I am impressed with the physical build of this light. The bidirectional clip is a nice touch, and one I like seeing on a compact EDC-style light. The electronic switch has both green and red LEDs underneath, and light up to illustrate aspects of operation. I’m not crazy about the switch feel though – just like the C8L, I find there is just a bit too much play on the hard switch cover, and it’s possible that a glancing press may not properly connect. Note that like the Sofirn IF25A, you can activate a locator beacon function for the switch – but it is set by default to off on this light (see User Interface section for more info).

Tailstanding is very stable, thanks to the flat tailcap (there is a side cut-out to allow you thread the basic wrist lanyard through). Tailcap threads are square-cut and anodized, with good feel. I always recommend you keep a light stored locked out when not in use. Thanks to the anodized tailcap threads, you can do this easily by a simple twist of the tailcap.

Note there is a magnet in the tailcap, allowing you stably mount the light horizontally (or upside-down) on any metal surface. Strength of the magnet is just about right in my view – enough to hold stably, but not as super-strong as some lights (e.g. Armytek, which tend to attract nearby metal objects).

The light’s USB-C charging port is located on the head opposite to the electronic switch. The port has a thick rubber cover. Just like the C8L, I found the cover to fit rather tightly, making it hard to full depress. But I suppose that should help with waterproofness if you can press it down enough.

Note that the light can roll easily if you take the pocket clip off, so I recommend you keep it on. Anodizing looks to be good quality, with no damage on my sample. I would describe the finish as satin – not as glossy as some, but not completely matte either. Its a nice package, comfortable and well-balanced in the hand with decent grip.

Inside, the light comes with a Wurkkos-branded standard-sized 5000mAh 21700 battery, with a slightly raised flat-top. There is a small post in the head, ensuring good contact given the decently robust tailspring (which is often required to support higher current draws).



The TS22 uses a XHP70.2 emitter, coupled with a deep textured reflector (moderate orange peel, OP). As always, there is some colour shifting across the periphery of the beam (a well-known issue with XHP70.2 emitters). Unfortunately, this is accentuated by the purplish anti-reflective (AR) coating on the lens of my TS22 sample. That said, it’s still not as bad as some I’ve seen.

The bezel is crenelated bare aluminum – scalloping is not too aggressive, so you can headstand stably.

There is a very interesting option with this light, which is to turn on the switch indicator (green LED) when the battery and tailcap are connected. As I will explain below, this is a good way to give yourself an effective “moonlight” mode, depending on how you want to configure the UI.


Locator

The second pic above is a close-up on a white wall in the dark (not really this bright, using my cellphone’s auto-adjust mode). As you can see, the green is a bit uneven (i.e., center hotspot and semi-circular crescent below), but it does work well enough for dark-adapted eyes. Scroll down for more details on how to turn it on.

User Interface

Unlike the previous model it replaces, the TS22 is not using Anduril. Instead, it has its own customized user interface – which also has a lot of advanced features, and is at least comparable to many of the good quality Convoy and Sofirn lights.

To start, you have a choice between Stepped Ramping mode (default), or continuously-variable Smooth Ramping mode. To switch between these modes, click 4 times when the light is On.

Stepped Ramping mode (default) levels: Eco, Low, Mid, High, Turbo, and Strobe

From OFF:

  • Press-and-hold: Turns on in Eco mode.
  • Single-click: Turns On in last memorized mode.
  • Double-click: Turns On in Turbo (or, if auto lock-out engaged, turns On in the last memorized mode).
  • Triple-click: Turns On in Strobe (or, if auto lock-out engaged, turns On in the last memorized mode).
  • 4 clicks: Manually activate Lock-out mode. Double-click to unlock.
  • 5 clicks: Set the switch indicator button to constant-on green, flashing green (roughly one quick flash every 2 secs), or off (default setting). The setting is memorized for when you next reconnect the battery/tailcap. This allows the switch LED to serve as a locator beacon for the flashlight, or an impromptu moonlight mode (see below). Note that setting either constant or flashing green disables the auto lock-out function (again scroll down for a discussion).

From ON:

  • Press-and-hold: Cycle between Lo > Med > Hi (in sequence).
  • Single-click: Turns Off.
  • Double-click: Jumps to Turbo. Note that doing a double-click from Turbo jumps you to Eco mode (which is odd, I would have expected it to jump back to whatever was previously memorized).
  • Triple-click: Jumps to Strobe.
  • 4 clicks: Switch between Stepped Ramping mode and Smooth Ramping mode

Mode memory:

Yes, for non-Turbo constant output modes.

Shortcuts:

  • Eco mode: Press-and-hold the switch from Off.
  • Turbo mode: Double-click the switch from On or Off (if not auto-locked out).
  • Strobe: Triple-click the switch from On or Off (if not auto-locked out).

Smooth Ramping mode levels: continuously-variable ramp from the Eco-level to Turbo, and Strobe.

Smooth ramping functions basically the same as Stepped ramping above, with the same shortcuts to Eco, Turbo and Strobe. The main difference is that a press-and-hold of the switch when On smoothly ramps across the entire output range (from Eco through Turbo), rather than just the 3 discrete levels in Stepped Ramping.

Low voltage warning:

Sort of. The main light will step down as the battery is running low. It will then turn Off by ~2.7V.

Lock-out mode:

Yes, but an unusual one. After 3 minutes of inactivity, the light will automatically lock it itself out so that a single-click won’t activate (i.e., the same as if you did 4 clicks from Off to enter the lock-out state). When locked out, the main emitter just does a quick double-flash if you single-click the switch, to indicate the lock out status. I have to say this auto lock-out surprised me the first time it happened (which is what you get for not reading the manual, doh!). A double-click of the switch deactivates the lock-out, and let’s you use the light normally again.

Alternatively, you can do a twist loosen/tighten of the tailcap, which also resets and deactivates the lock-out. Or, you can turn on the locator feature for the button indicator, which also disables the auto lock-out.

Given the unusual standby current (see below), I recommend you always store the light physically locked-out by a twist of the tailcap. If you do this, then you have a great opportunity to add an additional “green moonlight” mode to the light by setting the switch indicator to constant green. Simply twist the tailcap tight to turn on the “green moonlight” indicator LED, and then then use the switch as you normally would to activate all the regular modes of the main emitter.

Note that setting either indicator disables the auto lock-out feature, and will result in a much fast standby drain (again, scroll down for details). But I find that it’s more versatile to have the switch indicator set to constant on, and physically lock out the light at the tailcap.

Battery indicator:

Yes. The LED under the switch indicates the battery status for the first ~5 secs after turning on:

  • Solid Green: >30% Battery power remaining
  • Solid Red: <30% Battery power remaining
  • Flashing Red: Battery critically low, recharge as soon as possible.

Regardless to how you have set the switch indicator, it does shut off after 5 secs of continuous main LED use.

I have to say, this doesn’t seem like the best range of power levels to indicate (personally, I liked the Sofirn C8L settings better). Also, I did notice some inconsistencies on my sample where a nearly-full cell would sometimes (infrequently) show red or even flashing red. Not sure why that happened.

Video Overview:

Please see the video below, which walks you through the UI and build features of this light:

Reviewer Comments:

The UI is surprisingly versatile, although it is a bit quirky in some of its settings. Case in point, automatically entering the lock-out mode after 3 mins is a new one for me, and was more annoying than practical during my testing. Ultimately not a huge deal for me, as I always store my lights locked out at the tailcap when not in use anyway. And as I explain above, this opens up the opportunity to effectively turn the switch LED into an ad hoc “green moonlight” mode, as this also disables the auto lock-out. It’s also unusual nowadays to be limited to a single disorienting strobe – I would prefer to see a slow signaling strobe/beacon.

Note there is one other interesting feature to the TS22 – the light remembers the state of the electronic switch, even if you break the current at the tailcap. So if the light were in the on-state and you twist the tailcap loose to turn off, the next time you twist it tight again the light comes on automatically. This is unusual, as most lights simply revert to the electronic off-state once current is broken. But it does add versatility here if you want to use the light as a twisty – you don’t need to also click the electronic switch again to activate.

All that said, there are a good range of options here, on par with the better budget makers. In particular, I also like the option of switching between discrete Stepped ramping and continuously-variable Smooth ramping.

Circuit Measures

Pulse-Width Modulation (PWM):

Eco:
Eco

Low:
Lo

Mid:
Mid

High:
Hi

Turbo:
Turbo
Turbo

There is no sign of PWM, the circuit appears to be fully current-controlled. There is no circuit noise on any level until Turbo, where you can see some high-frequency noise around 18 kHz. This is completely undetectable and not a concern.

Strobes:

Strobe:

Strobe alternates between 6 Hz and 14 Hz every 1.75 secs or so. Very distracting.

There are no beacon or SOS modes.

Charging:

The switch button flashes red when the light is charging (roughly one second on, one second off). Switches to solid green when the charging is complete.

Resting voltage <3.0V

Resting voltage >3.0V

The TS22 has a two-stage charging feature, as seen on many modern lights (i.e., with a lower charging rate for when the cell is heavily discharged). Main charging rate is nice and high at 2A, which is good for a 21700 cell. Charging terminated at ~4.19V on my sample.

Note that the light can also serve as power bank to charge other USB-devices, like your cell phone. Simply plug the device into the USB-C power port, as shown below.

power bank

That’s a pretty impressive charge rate of 2.15A (shown charging my Samsung Galaxy S21+).

Standby / Parasitic Drain:

In the default state (i.e., no switch LED indicator), I measured the standby current as fluctuating between ~100-110 uA, with periodic jumps every couple of seconds to 1.82 mA. I’m not sure why it keeps jumping to the higher level.

UPDATE July 6, 2023: I had initially speculated that this may have to do with the power bank feature (i.e., I wondered if it keeps checking to see if a device is connected for charging). But I have determined this is not the case. I have gone and measured the standby drain for over 3 mins, and found that the periodic jumps to 1.82mA stop as soon as the auto lockout engages. The light stays within ~100-110 uA from that point on – and yet the power bank feature still works just fine.

For a 5000mAh battery, that would mean a little under 5 and half years before the battery would be fully drained. This is very reasonable for the class, and not a major concern, but I recommend you store the light locked out at the tailcap to cut the current completely.

As a comparison, I decided to test the other two switch indicator states (i.e., flashing once every 2 secs, or constant-on green). Interestingly, the flashing mode is 1.82 mA during the off-state, with a jump to 3.60 mA every time the green light illuminates. And not surprisingly, the constant-on green LED is a constant 3.60 mA drain. Note those levels would result in a 5000 mAh battery being fully drained in just under 3 months and 2 months, respectively.

As explained above though, this does give you the option to basically take advantage of a “green moonlight” mode to the light, by activating the constant green indicator LED under the switch. Just use the tailcap as a “twisty” for on/off of the moonlight, and click the switch for main mode illumination. And I would say 2 months of constant moonlight output is not bad.

Emitter Measures

This section is a new feature of my reviews, where I directly measure key emitter characteristics in terms of colour temperature, tint, and colour rendition. Please see my Emitter Measures page to learn more about what these terms mean, and how I am measuring them. As tint in particular can shift across levels, I typically stick with the highest stably regulated level for all my reported measures.

As explained on that page, since I am using an inexpensive uncalibrated device, you can only make relative comparisons across my reviews (i.e., don’t take these numbers as absolutely accurate values, but as relatively consistent across lights in my testing).

TS22 on Hi:

The key measures above are the colour temperature of ~4765K, and the slight positive tint shift (+0.0091 Duv) to yellowish at this temperature. For CRI (Ra), I measured a combined score of 67.

These values are very consistent with the rated specs for the neutral white XHP70.2 emitter on my sample, and match my visual experience of this light.

Beamshots

All outdoor beamshots are taken on my Canon PowerShot S5 IS at f/2.7, 0.5 secs exposure, ISO 400, daylight white balance. The bend in the road is approximately 40 meters (~45 yards) from the camera. Learn more about my outdoor beamshots here (scroll down for the floody light position used in this review).

Click on any thumbnail image below to open a full size image in a new window. You can then easily compare beams by switching between tabs.



As you can see above, the TS22 is a very bright floody light, with a lot of output into the foreground. As expected, it doesn’t throw as far as the larger head-size lights.

Testing Results

My summary tables are generally reported in a manner consistent with the ANSI FL-1 standard for flashlight testing. In addition to the links above, please see my output measures page for more background.

All my output numbers are based on my home-made lightbox setup. As explained on that methodology page, I have devised a method for converting my lightbox relative output values to estimated lumens. My Peak Intensity/Beam Distance are directly measured with a NIST-certified Extech EA31 lightmeter.

TS22 Testing Results

ModeSpec LumensEstimated Lumens @0secEstimated Lumens @30 secsBeam Intensity @0secBeam Intensity @30secsBeam Distance @30secsPWM/Strobe FreqNoise FreqCharging Current <3VCharging Current >3VParasitic DrainWeight w/o BatteryWeight with BatteryCCT (K)DuvCRI
Eco101010---NoNo0.17 A2.0 A1.82 mA94 g163 g---
Low1009595---NoNo0.17 A2.0 A1.82 mA94 g163 g---
Mid500565560---NoNo0.17 A2.0 A1.82 mA94 g163 g---
High1,8002,2002,100---NoNo0.17 A2.0 A1.82 mA94 g163 g4,7650.009167
Turbo4,5005,1504,80011,500 cd11,100 cd211 mYes18 KHz0.17 A2.0 A1.82 mA94 g163 g---
Strobe4,500-----6-12 HzNo0.17 A2.0 A1.82 mA94 g163 g---

This is a rare light where both my lightbox and my NIST-calibrated luxmeter actually report slightly higher output and beam distance measures than what the manufacturer reports. An impressive showing!

To view and download full testing results for all modern lights in my testing, check out my Database page.

Runtimes

As always, my runtimes are done under a small cooling fan, for safety and consistency. To learn more about how to interpret runtime graphs, see my runtimes methodology page.

Max

Hi

Med

One thing these results make very clear: Wurkkos has invested in an excellent quality constant-current boost driver. This is evidenced by the simply outstanding output/runtime efficiency on the higher levels above – and the lack of a true Moonlight level. However, as I explained in the UI and Circuit Feature sections above, you can set the switch indicator to effectively function as a “green moonlight” mode. So you really can have the best of both worlds here!

I really am blown away by the performance above. The comparison to the Acebeam E70 is particularly telling, as the drop-down levels on the TSS22 Turbo/Hi, and the constant Med level, are basically identical to the E70 (facilitating direct comparisons). What you can see is that the TS22 is up to 20% more efficient than the E70 (!). This is shown by either longer runtime for the same output (i.e., Med), more output for equivalent runtime (i.e., on Hi), or a combination of the two (i.e., Turbo).

These results are all the more impressive when you consider the ~5000K neutral white emitter on my TS22 sample. In the past, it was common to see lower rated output on neutral white emitters compared to cool white ones (due to the extra phosphor required). I can only assume my TS22 sample must have a particularly good output bin, as I doubt the circuit driver alone would account for such an efficiency boost (i.e., Acebeam has very good drivers too in my experience). But I didn’t expect this best-of-class performance from a “budget” model!

I’ll be honest, I was initially doubting these results, thinking my lightbox sensor might a little too sensitive to warmer whites than cooler ones. But I confirmed the TS22 and E70 output levels by a ceiling bounce using my calibrated lux lightmeter, and everything tracks. And that same calibrated lightmeter also reports greater beam distance (compared to the rated specs), making me think I just happened to get a particular good TS22 sample and/or XHP70.2 5000K emitter.

The regulation pattern is also top notch, with perfectly flat outputs until the battery is nearly exhausted. At that point there is a distinctive rounded step-down pattern.

To better show the initial step-down pattern on Turbo/Hi, here is a expanded view of first few minutes of the runtimes:

Max-extended

Note again that all my runtimes are done under a small cooling fan. I have tested the light without it, and the TS22 simply steps down sooner – but to the same levels shown above.

The light is certainly well regulated at every level, with outstanding efficiency.

Pros and Cons

ProsCons
Light has outstanding output/runtime efficiency, best-in-class I've seen for a XHP70.2 emitter so far.User interface is fairly sophisticated, and reasonable for the class, but it does have a few unusual quirks (most especially auto lock-out, see the UI and circuit measures above for an explanation).
Circuit shows excellent regulation, with thermally-mediated ramp down on Turbo/High, and step-downs as the battery is almost drained.There are some minor tint shifts across the beam periphery (common on this emitter class).
By configuring the switch indicator LED for constant on, you can have an effective "green moonlight" mode.Light has a relatively high standby drain if the auto lockout is disabled by activating the indicator feature. In any case, I always recommend locking out at the tailcap when not in use.
Compact build with good quality and decent handfeel.
Includes a bidirectional pocket clip
Can function as a power bank, to charge external devices.

Overall Rating

Preliminary Conclusions

Many of my observations of the Sofirn C8L are true here as well – consistent with their similar overall build quality and packaging (reflecting the common factory they are produced at, despite being different companies). There even seem to have exactly the same electronic switch cover (which is one minor negative for me – I find it a bit “soft” in feel).

But the TS22 is a stand out performer for the compact 1×21700 class – best-in-class output and overall efficiency to date in my testing. And with my preferred neutral white tint to boot! Regulation pattern is excellent as well, this light is an outstanding performer, and at a budget price. Of course, that kind of performance comes at a cost – the TS22 clearly has a strong boost circuit, which often means you have to sacrifice a main emitter moonlight mode. As with everything, there are trade-offs.

However, a saving grace here is the ability to activate the switch indicator green LED for constant-on when the battery is connected. Thus by simply connecting the light at the tailcap, you have an additional rudimentary “green moonlight” mode available to you. It’s good practice to get into locking out this light physically at the tailcap anyway (given the high relative standby current, presumably due to the innovative powerbank feature). And special bonus, using this constant-on indicator LED deactivates the auto-lock-out feature (which I found less than helpful anyway). So, a win-win all around.

The main beam pattern, while floody overall, is a bit more throwy than I expected for the size light and type of emitter – the reflector is relatively deep for the size. As with all XHP70.2 emitters, there is some tint shifting across the periphery of the beam (accentuated by the purplish AR coating here), but it is minor on my sample.

Wurkkos went with a custom user interface for this model. It has a decent number of customizable features, and is very reasonable for the class (i.e., similar or more advanced to many Convoy and Sofirn lights). Sure, it has a few quirks, but nothing you can’t get used to.

When considering all the considerable positives above, and the relatively minor issues, I think this light is worthy of a full 5 stars. Not something I give out often!

This is clearly a top pick for this class, and all for a budget price. Very impressive, and I look forward to trying out additional Wurkkos lights.

Acknowledgement

The TS22 was supplied by Wurkkos for review. As always, all opinions are my own and the light received the same rigourous and objective testing as all other lights that I have reviewed. At the time of review, this light retails for ~$45 USD (~$60 CDN). Wurkkos has provide me a 20% discount code to share with my readers, but their codes expire quickly (expected to expire in mid July): WURKKOS20 for use on their website here.

Acebeam E70 Mini

The E70 Mini is a compact every-day-carry style flashlight, with excellent colour rendition, running on an included single 18650 battery. Features a rakish looking design typically associated with custom lights.

  1. Introduction
  2. Manufacturer Specifications
  3. Package Details
  4. Build
  5. User Interface
  6. Circuit Measures
  7. Emitter Measures
  8. Beamshots
  9. Testing Results
  10. Runtimes
  11. Pros and Cons
  12. Overall Rating
  13. Preliminary Conclusions
  14. Acknowledgement

Introduction

Following on my review of the E70, this Mini version is the smaller 18650-based model that features 3x Hi CRI Nichia 519A emitters. It really is a miniature version of the same build, right down to the custom 18650 battery with built-in UBC-C charging port.

I had planned to focus on the newer 1×21700 class for these first new reviews, but I couldn’t resist this Mini model once I heard about those 3x Nichia 519A emitters. I figured that was worth a look. Let’s see how it compares.

Manufacturer Specifications

Note: as always, these are simply what the manufacturer provides – scroll down to see my actual testing results.

FeatureSpecs
MakerAcebeam
ModelE70 Mini
Emitter3xNichia 519A
Tint5000K (Hi CRI>90)
Max Output (Lumens)2,000
Min Output (Lumens)12
Max Runtime100 hrs
Max Beam Intensity (cd)5,875 cd
Max Beam Distance (m)153 m
Mode Levels6
FlashingStrobe
Battery1x18650
Weight (w/o battery)72 g
Weight (with battery)120 g
Length111 mm
Head Diameter26 mm
Body Diameter23.4 mm
WaterproofIP68 2m

Package Details

20221012_094508
20221012_094450
20221012_094618

The E70 Mini is shipped in the same kind of cardboard display box as the E70. Inside, you will find the following:

  • Acebeam E70 Mini flashlight, with attached clip (Torx screws)
  • Lanyard
  • Pouch
  • 18650 battery
  • USB-C charging cable
  • Extra o-rings
  • Warranty card,
  • Manual

It’s a good package of accessories, identical to its larger sibling.

Build

20230402_162334
From left to right: ArmyTek 18650 (3500mAh), Acebeam 18650 (3100mAh), Armytek Wizard Pro Nichia (18650), Acebeam E70 Mini (18650), Armytek Wizard C2 Pro Max (21700), Acebeam E70 (21700), Fenix E35 v3 (21700), Convoy S21E (21700).

20221012_132955
20221012_133009
20221012_132906
20221012_094842
20221012_094827
20221012_094811
20221012_094918

This is a compact version of the E70 in every way – shorter, thinner, and quite a bit lighter.

As with its larger sibling, the E70 Mini is double-walled, with the inner wall an electric blue colour (visible through the slanted cut-outs along the outside wall). While the extra wall thickness and larger head make this light a little larger than most in the 1×18650 class, it is more compact that the typical 1×21700 light.

The rear switch is electronic in nature, with a stainless steel switch cover. Feel and traverse of the switch is good, and easy to activate even if you don’t hit it dead-on. Thanks to the raised tail cut-outs, the light can still tailstand stably. I found the design and interface very easy to use in my testing.

The light lacks traditional knurling, but the cut-outs in the exterior wall produce the same basic effect, along with circular indents on the head. A very rakish design. Note that this double-walled design does produce a certain “hollow” feel when you tap on it, but that’s a minor point.

The pocket clip is firmly attached, and helps further with grip. It is not reversible, and can only be used for downward carry.

Hard anodizing looks to be good quality (as is typical for Acebeam), and is more on the matte side (which I personally prefer, not a fan of glossy lights). Threads are anodized, so you can lock out the light by a twist of the head.

The light lacks a USB-C charging port on the body, but there is one built into the bundled 18650 battery. There is a charging LED on the battery. Note that given the extra length of these batteries, you may have issues with older style ones making good contact (especially flat-top designs). But all of my old button-top 18650s work just fine in this light, so I think that risk is negligible.

20221012_094655
20221012_094731
20221012_133832

The light uses 3x Nichia 519A 5000K (Hi CRI >90) emitters, under a triple TIR optic. This produces a very nice neutral white tint with excellent colour rendition. Beam pattern is somewhat spot-like, with a fainter spillbeam (scroll down for beamshots). It’s a surprisingly smooth and even spotbeam, with relatively mild artifacts only around the edge of the dimmer spillbeam. There is none of the tint shifting I noticed on the larger E70 (due to its XHP70.2 emitter and lens AR coating).

The bezel has small scalloped crenelations on it, so you can tell if the light is on when head-standing. I haven’t tried using it as a weapon, but I imagine it would be unpleasant to be struck with the business end of this light.

Overall, I find this to be a good looking light with very good ergonomics and a good beam pattern. It fits comfortably in the hand.

User Interface

The E70 Mini uses a single tail-mounted electronic switch to control the flashlight. Available constant output modes, as per the manufacturer labels, are: Ultralow (which I will refer to as Moonlight throughout this review), Low, Med1, Med2, Hi, Turbo. There is one blinking mode outside the main sequence: Strobe. User interface is identical to the E70.

From OFF:

  • Press and hold: Moonlight (release after light activates to maintain Moonlight)
  • Single click: Nothing
  • Double click: Turns on in last mode used
  • Triple click: Strobe
  • 5 clicks: Activates lockout mode. Note the light will activate in Moonlight for ~3 secs, then flash three times, turn off and lock itself out. Press and hold 3 secs to disable lockout (or loosen-tighten the tailcap)

From ON:

  • Press and hold: Cycles through all the modes from Low to High (note that Turbo and Moonlight are not part of the main cycle)
  • Double click: Turbo (and a repeated double-click returns you to the previously used mode)
  • Triple click: Strobe

Shortcuts:

  • To Turbo: Double click from On to enter Turbo (or double-click twice from Off)
  • To Moonlight: Press and hold from Off
  • To Strobe: Triple-click from either On or Off
  • To Lockout: Press and hold the switch for more than 5 secs. Press and hold 3 secs to disable (or loosen-tighten the tailcap)

Mode memory:

Yes. The light remembers the last constant output used, and returns to it next time you turn on it (with the exception of Moonlight and Turbo).

Low battery warning:

No.

Reviewer Comments:

As before, I find this to be a decent enough interface, except for the need to double-click to turn on. Still, it isn’t too hard to remember this little quirk, and the worst thing that will happen is the light won’t come in with a single click (although you are forgoing the option of an extra shortcut this way). Alternatively, a press and hold will activate in Moonlight, and you can always cycle through to the main modes from there.

Note that Turbo requires a double click to enter (and only from On), and ramps down automatically after about a min or so (scroll down for runtimes). But see below for my comments on the new “Ultralow” mode that has replaced Moonlight on this model (see Testing Results for more info).

Circuit Measures

Pulse-Width Modulation (PWM):

E70Mini-Lo

As before, there is no sign of PWM or circuit noise at any level. The light appears to be fully constant-current controlled. 🙂

Strobe:

E70Mini-Strobe

Strobe frequency is a fast 9.9 Hz. Fairly disorienting.

Charging:
20221012_095043

Resting voltage <3.0V
E70Mini-charging1

Resting voltage >3.0V
E70Mini-charging2

The Acebeam 21700 battery shows an initial low USB-C charging current of 0.08A when the cell is heavily depleted (<3.0V resting), which jumps up to 1.1A once the cell is >3.0V resting. This two-current charging is a good design, and indicates a safe integrated charging circuit. The max charging rate is also very reasonable for a 186500 battery (better than the lower current E70 model).

Standby / Parasitic Drain:

I have recently re-tested the standby current with an improved setup, and measured 59 uA.

This is quite low, and not a concern in practice (i.e., it would take 6 years to fully drain the battery). Still, I suggest you lock the light out when not in use to prevent accidental activation and completely cut this standby drain. A single twist of the head will lock out this light, thanks to the anodized screw threads.

Emitter Measures

This section is a new feature of my reviews, where I directly measure key emitter characteristics in terms of colour temperature, tint, and colour rendition. Please see my Emitter Measures page to learn more about what these terms mean, and how I am measuring them.

As explained on that page, since I am using an inexpensive uncalibrated device, you can only make relative comparisons across my reviews (i.e., don’t take these numbers as absolutely accurate values, but as relatively consistent across lights in my testing).

The key measures above are the colour temperature of ~4460K, and the moderately negative tint shift (-0.0053 Duv) to rose at this temperature.

For CRI (Ra), I measured a combined score of 95.

These values seem reasonable for neutral-white tinted Nichia 519A emitters (which tend toward negative Duvs in my experience), and match my visual experience of this light.

To give you an idea of the range across output levels, I measured Turbo mode as a CCT of ~4600K which dropped consistently down to the Ultralow mode of ~4400K. Duvs fluctuated mainly from -0.0053 to -0.0065 with no real pattern (with an unusually low reading of -0.0075 on Turbo).

Beamshots

All outdoor beamshots are taken on my Canon PowerShot S5 IS at f/2.7, 0.5 secs exposure, ISO 400, daylight white balance. The bend in the road is approximately 40 meters (~45 yards) from the camera. Learn more about my outdoor beamshots here (scroll down for the floody light position used in this review).

Click on any thumbnail image below to open a full size image in a new window. You can then easily compare beams by switching between tabs.



Here is an earlier pic I did last fall, of the larger model E70 in this location:

It is an interesting beam pattern; a very even spotbeam effect, with dimmer secondary spill. I find I quite like it. You can’t really notice the mild multi-emitter artifacts in the spillbeam in practice.

Testing Results

My summary tables are generally reported in a manner consistent with the ANSI FL-1 standard for flashlight testing. In addition to the links above, please see my output measures page for more background.

All my output numbers are based on my home-made lightbox setup. As explained on that methodology page, I have devised a method for converting my lightbox relative output values to estimated lumens. My Peak Intensity/Beam Distance are directly measured with a NIST-certified Extech EA31 lightmeter.

E70 Mini Testing Results

ModeSpec LumensEstimated Lumens @0secEstimated Lumens @30 secsBeam Intensity @0secBeam Intensity @30secsBeam Distance @30secsPWM/Strobe FreqNoise FreqCharging Current <3VCharging Current >3VParasitic DrainWeight w/o BatteryWeight with Battery
Ultralow121414---NoNo0.08 A1.1 A1.39 mA71 g124 g
Low608585---NoNo0.08 A1.1 A1.39 mA71 g124 g
Med1170240240---NoNo0.08 A1.1 A1.39 mA71 g124 g
Med2380440430---NoNo0.08 A1.1 A1.39 mA71 g124 g
High900-6001,000950---NoNo0.08 A1.1 A1.39 mA71 g124 g
Turbo2,000-6002,3002,1506,020 cd5,670 cd151 mNoNo0.08 A1.1 A1.39 mA71 g124 g
Strobe1,000-----9.9 HzNo0.08 A1.1 A1.39 mA71 g124 g

While the output levels are generally pretty well spaced, I’m disappointed to see the lack of a true Moonlight mode now (i.e., the “Ultralow” minimum output mode is much higher than Moonlight on the E70 model). I’m guessing they weren’t able to produce a true moonlight with the multiple emitter setup (i.e., there’s probably a boost driver in there now, which can help for runtime and regulation, but which can also limit both high and low levels).

At 71g/124g (without/with battery), the E70 Mini is noticeably lighter than the E70, which weighed in at 101g/175g in my testing.

To see full testing results for all modern lights in my testing, check out my Database page.

Runtimes

As always, my runtimes are done under a small cooling fan, for safety and consistency. To learn more about how to interpret runtime graphs, see my runtimes methodology page.

18650-Max

18650-Hi

18650-Med

And here’s a blow-up of the first few mins of the E70 Mini on Turbo/Hi, so you can see the initial Turbo step-down better.

18650-Max

The E70 Mini shows very good efficiency and regulation at all levels tested, consistent with its sibling and other good current-controlled circuits. It also seems to accurately step-down (at Turbo/Hi) to a ~600 lumen level after a certain period of time (i.e., 1 min and 21.5 mins, respectively).

The use of multiple 519A emitters appear to be a bit less efficient than the single Nichia 144AR in the competing Armytek Wizard Pro Nichia, but its hard to say for certain given the larger battery capacity of that light. Regardless, this is very good performance on the E70 Mini.

Pros and Cons

ProsCons
Very good current-controlled efficiency, with stable regulation in all modes.Double-click to turn on is unusual, but easy enough to remember.
Multiple Hi CRI emitters, with a very clean beam.Standby drain higher than typical, leading to a rapid draining of the battery.
Compact and comfortable to hold in the hand.Lacks a true Moonlight mode now.
Included high-capacity battery with USB-C charging port.

In comparison to the E70, the smaller size here is likely to be a plus for many. Both lights have great beams for their classes, but I prefer the E70 Mini for its neutral tint and lack of the spillbeam tint shifing. But the E70 Mini unfortunately lacks the Moonlight mode now.

Overall Rating

Preliminary Conclusions

I was initially hoping this light would actually would go up in rating from my E70 review, given some of the relative benefits here – namely the more compact size, higher charge rate, and improved beam pattern with higher CRI. But the lack of a true Moonlight mode now (or even a really low low) really knocks down the value of this light as an all-purpose EDC (i.e., every day carry).

The beam pattern is distinctive, with its defined spot and dimmer spillbeam. It is frankly lovely, as there are (impressively) no artifacts in the spotbeam, and a very even tint throughout. A great job on the spotbeam TIR optic – I see these have come a long way from my earlier reviewing days. And the ~5000K is right up my alley for a preferred colour temperature.

Everything else about this light is consistent with my review of the E70. I find it to be a great looking light, and it is very comfortable to hold and operate. Another improvement over the E70 is the faster charge rate of the bundled 18650 cell, in keeping with most chargers of this class.

Another great light to consider in the rechargeable compact class of modern flashlights. If it weren’t for the missing Moonlight mode (less than optimal UI) this would be a 5 star light.

UPDATE May 11, 20223: I originally reported an unusually high parasitic standby drain on my sample, as I was getting inconsistent readings and so went with the highest value. I’ve upgraded my DMM leads and more carefully masked off the surfaces, and am pleased to report much more reasonable (and inconsequential) drain levels consistent with the competition.

Acknowledgement

The E70 Mini was provided for review by Acebeam. All opinions are my own however, and the light received the same rigourous and objective testing as all other lights that I have reviewed. At the time of review, this light retails for ~$70 USD (~$105 CDN).

Acebeam is making available a discount code for readers of my reviews. If you purchase the light from the Acebeam.com website, you can use the code “selfbuilt” (without the quotation marks) for 10% off.

Convoy S21E

The S21E is a popular light from the budget flashlight maker Convoy, and is powered by a single 21700 battery. It comes with a variety of emitters options, and features a decent user interface.

  1. Introduction
  2. Manufacturer Specifications
  3. Package Details
  4. Build
  5. User Interface
  6. Circuit Measures
  7. Emitter Measures
  8. Beamshots
  9. Testing Results
  10. Runtimes
  11. Pros and Cons
  12. Overall Rating
  13. Preliminary Conclusions
  14. Acknowledgement

Introduction

In my previous reviewing era, I stayed away from budget lights for the reasons I outlined here. But upon my return to reviewing, I’ve noticed a number of inexpensive brands seem to have good quality and consistency. So I thought it was time to start looking at some of the more popular budget models in the 1×21700 class.

Cue up Convoy, whose S21 series was up to its fifth iteration by last fall – the S21E – when I purchased these samples for testing. At the time, the S21E was available with a choice of three different emitters, so I picked them all up from the official store for comparison testing (although many more tint options are available). Specifically, these are ones with the standard “4 mode” circuit (which actually has constant output 5 modes, along with a continuously variable ramp).

I see there are a wider variety of anodizing colours available now, and a different battery than what came bundled with mine. But the specs remain the same, so your performance should match what you see below.

Manufacturer Specifications

Note: as always, these are simply what the manufacturer provides – scroll down to see my actual testing results.

FeatureSpecsSpecsSpecs
MakerConvoyConvoyConvoy
ModelS21ES21ES21E
EmitterNicha 519ASST40SFT40
Tint5000K (Hi CRI>90)6500K6500K
Max Output (Lumens)1,3002,4001,800
Min Output (Lumens)---
Max Runtime---
Max Beam Intensity (cd)---
Max Beam Distance (m)---
Mode Levels5 + Ramp5 + Ramp5 + Ramp
FlashingStrobeStrobeStrobe
Battery1x217001x217001x21700
Weight (w/o battery)88 g88 g88 g
Weight (with battery)168 g168 g168 g
Length116.4 mm116.4 mm116.4 mm
Head Diameter27.3mm27.3mm27.3mm
Body Diameter27.3 mm27.3 mm27.3 mm
WaterproofIPX4IPX4IPX4

Package Details

20221204_105843

Like many Convoys, the S21E can be purchased with any of a number of emitter choices and tints. Shown above are the Nichia 519A 5000K, Luminus SST40 6500K, and Luminus SFT40 6500K. But a wide range of 519A tints (from 2700K through 5700K) are possible, along with a limited number of Luminus tints (although not all options available for each emitter, nor at any given time on the store front).

The S21E is shipped in a simple cheap cardboard box, wrapped in thin bubble wrap. Inside, you will find the following:

  • Convoy S21E with removable pocket clip attached
  • Thin wrist lanyard, also attached
  • If you buy the version with a battery included, a thin filter pad is included to block contact during shipping

And that’s it. There is no manual or instruction sheet, so you’ll need to check out reviews like this to learn how it works and what all the features are. Minimalist to be sure, in keeping with the price.

Build

20230402_162025
From left to right: LiitoKala 21700 (5000mAh), Fenix ARB-L21-5000U 21700 (5000mAh), Sofirm IF25A, Fenix E35 v3, Convoy S21E, Imalent MS03, Armytek Wizard C2 Pro Max, Acebeam E70, Nitecore P20iX, Nitecore MH12SE, Lumintop D3, Convoy M21F.

Note: in all photos below, the sequence from left to right (or top to bottom), are always the Nichia 519A, SST40, and SFT40 emitter versions. Also note that the SST40 version was bought in early fall 2022, and the other two were a couple of months later.

20221204_105042
20221204_105104
20221204_105126
20221204_105156
20221204_105423
20221204_105454
20221204_105519
20221204_105544

The S21E is a minimalist, compact build – but seems very well made.

There is a large switch cover over the side-mounted electronic switch. Feel is good, with smooth action. There is a red and a green LED underneath, to show you the charge status when charging (see below).

There is a small spring on the positive contact terminal in the head, so flat top cells can easily be used. Tailcap is flat with a standard spring and retaining ring. Note that my earlier SST40 sample (middle above) came with a stiff silver-coloured tail spring – that applied another enough pressure to dent the positive battery terminal against the head spring. Later specimens (left and right) came with gold-coloured springs than aren’t as stiff – and so, no denting. This also like reflects the thinner metal on the LiitoKala cells.

As an aside, I’m actually impressed to see the rapid correction of this design issue – especially in a budget build. That said, I did notice a batch issue with lens, which I will explain below.

There is an integrated USB-C charging port on the head of the light, across from the switch, under an attached rubber cover. Cover fits well enough to make me think the light is water-resistant, but less so than more expensive offerings in this class (and so, I wouldn’t recommend immersing it in water).

The light doesn’t have knurling per se, but rather a series of cut-outs along with the concentric circle “reeling.” While serviceable, this can be slippery in practice – so I recommend you leave the removable pocket clip attached to help with grip. The pocket clip attaches firmly. It is not reversible, but due to the design can be used for both upward and downward carry (although may be a bit tight, depending on what you want to clip it to).

Anodizing looks to be decent quality, in matte finish (I presume it is only type II, given you can get the light in a variety of colours). Tailcap screw threads are anodized, so you can lock out the light by a twist of the tailcap. I haven’t shown it above, but you can unscrew the head from the body too (screw threads there are not anodized there).

Thanks to the spring in the head, any regular-sized 21700 cell (without an integrated USB-C charger) should fit and work in the lights. You are best sticking with flat-top cells though, as longer cells (i.e., with a button top) may be too tight given the relatively short body.

20221204_105232
20221204_105257
20221204_105319
20221204_105342
20221204_105951

The Nichia 519A comes with a lightly textured reflector, while the Luminus models come with a smooth reflector. Reflectors are relatively shallow, and really seem to be designed best for the SST40 emitter (the SFT40 emitter has quite a few bright rings in its outer spillbeam, for example).

Note that my Nichia 519A and SFT40 samples both show a noticeable amount of purple fringing on the periphery of the spillbeam, due to a heavy purplish AR coating on the lens of those samples (the earlier SST40 sample lens has a milder greenish AR coating, which doesn’t affect the beam as much). Scroll down for beamshots, but I don’t find this purplish AR coating to be as noticeable or a problem on the Nichia model, likely due to the warmer tint and smoother beam profile. The AR tint difference may have been a batch effect of that particular point in time, because I have seen a SST40 model purchased more recently that has the lighter greenish AR coating.

The bezel is stainless steel, and is smooth without crenelations. So you may not be able to tell if the light is on when it is headstanding. The head opens easily at the bezel ring (i.e., no thread locker), and the lens and reflector come right out for easy access to the emitter. I am glad to note an o-ring on both the underside of the lens (toward the reflector) and on the bezel ring itself. This reassures me as to water-proofness.

Overall, I find this to be a very decent quality build – nothing flashy, but serviceable and much better than I expected for the price. Note that this is where having purchased 3 separate samples (over time) to evaluate is important, as I have found in the past that one of the issues with budget lights can be inconsistency. It’s good to see them all equally well made overall, and showing at least one incremental improvement over time (i.e., that prompt revision to a less stiff tail spring). But the lens AR coating issue, which appears to have been limited to a particular intermediate batch, shows that you may still have issues there.

User Interface

The S21E driver is a lot more advanced than I would have expected for a budget offering. It has a choice of two distinct multiple-output mode sets you can select: one with a smooth ramp in output from min to max, and one with four discrete steps (1%, 10%, 40%, 100%/Turbo) plus a 0.2%/Moonlight level. Also available is a “Tactical” mode which only has the Turbo level. A strobe mode is also available, along with some other bonus features.

So, let’s go through the user interface in detail:

From OFF:

  • Press and Hold: Moonlight
  • Single click: Turns on to the memorized brightness level
  • Double click: Turbo
  • Triple click: Strobe
  • 4 clicks: set to Tactical mode (i.e., only momentary 100% brightness)
  • 5 clicks: Voltage check. The light will blink out the voltage to one decimal place, first by the main volt, then by the decimal point (e.g., 3 blinks, a pause, and five more blinks would mean 3.5V).
  • 6 clicks: Switch between ramping mode and stepped mode
  • 10 clicks: Electronic lock out. Click for another 10 times to re-activate the light. Note that I suggest you simply lock the light out by a twist of the tailcap instead.

From ON:

  • Press and Hold (in Ramping mode set): Ramp up to 100%/Turbo. Press and hold again to ramp down to 0.2%/Moonlight. Release at any time to select the desired level. Note that when you restart the ramp after selecting a level, it reverses direction on the next press and hold.
  • Press and Hold (in Stepped mode set): Step up to next level (4 main levels on the sequence, Moonlight is not on the main sequence). Press and hold again to step down in levels.
  • Single click: Off
  • Double click: Turbo
  • 3 clicks: Strobe
  • 5 clicks: Voltage check
  • 6 clicks: Switch between ramping mode and stepped mode

Shortcuts:

  • To Moonlight: Hold from off
  • To Turbo: Double-click from any mode except Tactical
  • To Strobe: Triple-click from any mode except Tactical

Mode memory:

Yes. The S21E will memorize any brightness level except for Moonlight and Strobe.

Low voltage warning:

Yes. The light will drop down to ~1% output and the button will blink red before eventually shutting off at ~3V. Note that it can run for a very long time at this level before shutting down.

Reviewer Comments:

This is a very impressive interface – surprisingly versatile, but also very easy to use (i.e., very intuitive). Hand the light to someone, and it wouldn’t take them long to get used to it, the modes make a lot of sense. Switching between ramping and stepped mode sets is a bit peculiar with the six clicks, but it’s not like it’s something you will want to switch between often anyway.

Note that the highest output modes step down automatically after a period of time (and heat build up – scroll down for runtimes). And while I’m glad to see the “Moonlight” mode here, it is not actually low enough to be what I would consider a true moonlight (see Testing Results for more info).

Circuit Measures

Pulse-Width Modulation (PWM):

There is no sign of PWM at any level – the lights appear to be current-controlled. However, I did detect an oscillating noise pattern on several of the levels, include Turbo, as shown below.

Turbo/100% (Nichia 519A, SST40, SFT40)
S21E-Nichia-100S21E-SST40-100S21E-SFT40-100

As you can see, the pattern is variable in intensity, and at a high frequency (~3-6kHz). But rest assured it is not something that you can see visually. It is even more detectable at the higher intermediate outputs, as shown below.

Step 40% (Nichia 519A, SST40, SFT40)
S21E-Nicha-40S21E-SST40-40S21E-SFT40-40

Here is a blow-up of one of the 40% levels, which clearly shows a simple sine-wave oscillation (i.e., no PWM here). Some people call this a saw-tooth noise pattern.

40% SS40 Zoomed in
S21E-SST40-40-Zoom

Still present at the 10% output level:

Step 10% (Nichia 519A, SST40, SFT40)
S21E-Nichia-10S21E-SST40-10S21E-SFT40-10

But it seems to disappear by the lower outputs, as shown below for both the stepped and ramp outputs – but that may just be because the output is too low for my oscilloscope to detect.

Step 1% (Nichia 519A, SST40, SFT40)
S21E-Nichia-1S21E-SST40-1S21E-SFT40-1

Ramp Lo (Nichia 519A, SST40, SFT40)
S21E-Nichia-LoS21E-SST40-LoS21E-SFT40-Lo

Again, none of the above is an issue in use. I am simply including the scope readings for completeness.

Strobe:

Strobe (Nichia 519A, SST40, SFT40)
S21E-Nichia-StrobeS21E-SST40-StrobeS21E-SFT40-Strobe

Strobe frequency is a very consistent fast 10.1 Hz, which most would consider a tactical frequency.

Charging:
20221204_105654
20221204_105715

Note that the red/green LEDs are very bright when charging.

Charging rate for the Nichia 519A, SST40, SFT40:
S21E-Nichia-charging1
S21E-SST40-charging2
S21E-SFT40-charging1

The S21E has a single high-current charging rate of ~2.0A-2.1A, as shown for the 3 specimens above.

I normally like a two-stage charging feature (i.e., with a lower charging rate for when cells are heavily discharged). But the light output drops down to a super low mode when the battery is running low, and big red button flashes incessantly, warning you to shut down. In fact, it is actually very hard to get the cell below ~3.0V in this light. As such, this is reasonable compromise to stick with a single high charging rate.

Standby / Parasitic Drain:

I measured the standby current across the 3 samples at a negligible 31.5 uA, 30.5 uA, and 31.0 uA.

This is nice and ultra-low standby current, and is not a concern for draining the cells. However, I always suggest you lock the light out when not in use to prevent accidental activation (and cut the negligible standby drain in this case). A single twist of the tail will lock out this light, thanks to the anodized screw threads.

Emitter Measures

This section is a new feature of my reviews, where I directly measure key emitter characteristics in terms of colour temperature, tint, and colour rendition. Please see my Emitter Measures page to learn more about what these terms mean, and how I am measuring them.

As explained on that page, since I am using an inexpensive uncalibrated device, you can only make relative comparisons across my reviews (i.e., don’t take these numbers as absolutely accurate values, but as relatively consistent across lights in my testing).

S21E Nichia 519A:

The key measures above are the colour temperature of ~4330K, and a slight negative tint shift (-0.0008 Duv) to rose at this temperature.

For CRI (Ra), I measured a combined score of 94.

These results are consistent with neutral-white Nichia 519A emitters, and match my visual experience of this light.

S21E SST40:

The key measures above are the colour temperature of ~5350K, and the very noticeable positive tint shift (+0.0166 Duv) to green-yellow at this temperature.

For CRI (Ra), I measured a combined score of 50.

These results are consistent with high output Luminus SST emitters (although CRI is a bit low on my sample), and match my visual experience of this light.

S21E SFT40:

The key measures above are the colour temperature of ~5660K, and a noticeable positive tint shift (+0.0136 Duv) to green-yellow at this temperature.

For CRI (Ra), I measured a combined score of 65.

These results are again consistent with high output Luminus SST emitters, and match my visual experience of this light.

Beamshots

All outdoor beamshots are taken on my Canon PowerShot S5 IS at f/2.7, 0.5 secs exposure, ISO 400, daylight white balance. The bend in the road is approximately 40 meters (~45 yards) from the camera. Learn more about my outdoor beamshots here (scroll down for the floody light position used in this review).

Click on any thumbnail image below to open a full size image in a new window. You can then easily compare beams by switching between tabs.



Testing Results

My summary tables are generally reported in a manner consistent with the ANSI FL-1 standard for flashlight testing. In addition to the links above, please see my output measures page for more background.

All my output numbers are based on my home-made lightbox setup. As explained on that methodology page, I have devised a method for converting my lightbox relative output values to estimated lumens. My Peak Intensity/Beam Distance are directly measured with a NIST-certified Extech EA31 lightmeter.

S21E Testing Results

EmitterModeSpec LumensEstimated Lumens @0secEstimated Lumens @30 secsBeam Intensity @0secBeam Intensity @30secsBeam Distance @30secsPWM/Strobe FreqNoise FreqCharging Current <3VCharging Current >3VParasitic DrainWeight w/o BatteryWeight with Battery
Nicha 519AMoon 0.2%-1010---NoNo2.0 A2.0 A31.5 uA89 g154 g
Nicha 519A1%-1919---NoNo2.0 A2.0 A31.5 uA89 g154 g
Nicha 519A10%-230230---No4.4 kHz2.0 A2.0 A31.5 uA89 g154 g
Nicha 519A40%-550540---No5.9 kHz2.0 A2.0 A31.5 uA89 g154 g
Nicha 519ATurbo 100%1,3001,3001,25011,510 cd10,550 cd205 mNo5.3 kHz2.0 A2.0 A31.5 uA89 g154 g
Nicha 519AStrobe------10.1 HzNo2.0 A2.0 A31.5 uA89 g154 g
SST40Moon 0.2%-1616---NoNo1.65 A2.0 A30.5 uA87 g153 g
SST401%-2929---NoNo1.65 A2.0 A30.5 uA87 g153 g
SST4010%-340340---No4.9 kHz1.65 A2.0 A30.5 uA87 g153 g
SST4040%-750740---No6.6 kHz1.65 A2.0 A30.5 uA87 g153 g
SST40Turbo 100%2,4002,0502,00027,300 cd26,000 cd322 mNo6.9 kHz1.65 A2.0 A30.5 uA87 g153 g
SST40Strobe------10.1 HzNo1.65 A2.0 A30.5 uA87 g153 g
SFT40Moon 0.2%-1313---NoNo2.1 A2.1 A31 uA90 g156 g
SFT401%-2626---NoNo2.1 A2.1 A31 uA90 g156 g
SFT4010%-280280---No4.5 kHz2.1 A2.1 A31 uA90 g156 g
SFT4040%-650640-No6.0 kHz2.1 A2.1 A31 uA90 g156 g
SFT40Turbo 100%1,8001,7501,70041,400 cd37,500 cd387 mNo3.2 kHz2.1 A2.1 A31 uA90 g156 g
SFT40Strobe------10.1 HzNo2.1 A2.1 A31 uA90 g156 g

To see full testing results for all modern lights in my testing, check out my Database page.

Runtimes

As always, my runtimes are done under a small cooling fan, for safety and consistency. To learn more about how to interpret runtime graphs, see my runtimes methodology page.

S21E-Max

S21E-Hi

S21E-Med

As you can see above, the S21E circuit is well regulated, with thermal-mediated step-downs at the higher levels. Note that output tends to rise a little bit near the end of the runs on these levels, before stepping down to the low output.

Here is an expanded view of the max runtime graph, so that you can see the first few minutes with better resolution:

S21E-Max-expanded

Overall efficiency is quite good for each given emitter type. I’m taking the budget cell’s 5000mAh rated capacity as face value here (always a stretch for budget cells), but the SST40 specimen shows nearly comparable efficiency to brand name lights, which is impressive. So this suggests the overall efficiency of this circuit is high.

Pros and Cons

ProsCons
Very good current-controlled efficiency for each emitter type, across all modes/levels.Stepped mode spacing is not ideal, and Moonlight mode is too bright to qualify as a true moonlight.
Great feature set with both ramping and discrete output levels, including Turbo and Moonlight modes.Light heats up quickly on Turbo, given low thermal mass.
Nicely balanced beam profile for SST40 and Nichia 519A models.Significant purple fringing at the edge of the spillbeam on two samples, due to a batch of heavy AR coated lens.
Very compact build, quite petite for the class.Green/Red LEDs under the switch covers are very bright, and the low-voltage warning flash can be distracting.
Optional included high-capacity battery.Older models came with a very stiff tail spring that caused denting of LiitoKala cells (seems resolved on more recent versions).

Another minor issue I noted is the ramping speed is rather quick. But given how few lights actually give you a choice of a continuous ramp option, this is hardly a complaint!

Overall Rating

Preliminary Conclusions

My new rating system above is based solely on the features of the light, without taking cost into account. And so, given the very low cost of these lights, this is a really impressive showing.

I’m particularly impressed by the performance and versatility of the circuit, and the option for both discrete stepped levels and a continuous ramp. Yes, the discrete levels are not really well spaced, and the ramp is a bit fast, but these seem like relatively minor quibbles. It is frankly surprising to see such a versatile circuit in a budget light, with such good regulation and efficiency.

Charging performance was very good under the circumstances, with a negligible standby drain. All said, this is quite an impressive set of of circuit features for the price. It’s definitely few frills in terms of extras, but it has what you need where it counts.

Physically, the light is a very good build, quite serviceable with decent hand feel and use. There is not a lot of mass however, so it does heat up quickly. And of course, as is often the case with budget lights, you can get variability in components over batches (i.e., the too-strong tail spring on my SST40 sample, the heavy purple AR lens coating on the other two, etc.). So that is one thing you will have to accept in a budget brand.

Beam pattern is reasonably good for all three emitters. That said, the rather small improvement in throw of the SFT40 over the brighter overall SST40 doesn’t seem worth it to me. And the small reflector here seems to be introducing brighter defined rings in the periphery of the SFT40 spillbeam (which is accentuating the purple fringing of the AR coating on that particular sample). I think a light with a larger head/reflector would really be necessary to take best advantage of the SFT40 emitter. So I recommend you stick with the SST40 or Nichia 519A in this series, in your preferred colour temperature (and very nice that they offer that).

I’m glad I decided to pick these up to test. Based simply on their own merits, they are worthy contenders to consider in the 1×21700 space. When you factor in their incredibly low-cost budget price, I’d say these lights are well recommended (at least the Nichia 519A and Luminus SST40 versions).

I’m looking forward to seeing how other budget lights perform.

Reviewer’s Additional Comment: A new model in the S21-series has just come out, the S21F. However, this is a significant build change from the earlier S21-series lights, with a blended multi-emitter design. The S21E remains the most advanced version of the compact, single-emitter 1×21700 light from Convoy.

Acknowledgement

The S21E samples were personally purchased from the Convoy store of Aliexpress in the fall of 2022. At the time of review, these lights retail for ~$30 USD (~$40 CDN) with a bundled battery.