Review: Blitzwolf BW-ET1 Review AA/14500 Flashlight

This is a review of the Blitzwolf BW-ET1 flashlight. It is a pocket-sized light that takes a variety of battery types in the AA size. This includes alkaline, NiMH, lithium primary, and lithium-ion 14500.

The light was provided by Banggood for review purposes. You can find the light on their site here, it is presently on a flash sale for $24.50:

Blitzwolf BW-ET1

There is also a video review of the light I put up on youtube, here:


I had not previously heard of the Blitzwolf brand, but some research shows it has a few other models in their portfolio that are generally well received. The BW-ET1 is well-made and seems durable. It comes with the usual specs for waterproof and drop-proof you expect, type III anodizing, etc.

I’m not sure this light is aimed at flashaholics, at least not on a AA battery. It does perform much better on a 14500 battery, so I suggest flashaholics consider that battery type. Nevertheless, it does have a couple of useful and fun features.

My sample of the light has a neutral white Cree XP-L LED, listed as a XP-L V6. It is an efficient LED that gives good run times.

Note that I am providing my own outputs and runtimes which I measured, not what is listed in the official specs. Although, they are reasonably close.

The light has “stepless dimming”, meaning that you can ramp the output of the light anywhere from 1 lumen to 500 lumens, by pressing and holding the switch. The chosen output level is memorized. This is a fun feature to have, and is implemented well in this light.

The light can optionally take two AA batteries for longer run-time, using a battery extension tube. Note that two 14500 batteries is not supported, as this exceeeds the voltage range of the light. I like that the light takes any kind of battery chemistry, however, only a lithium-ion 14500 battery gives you access to the high output levels. AA batteries provide a useful amount of light and longer run-times, but lower maximum brightness.

A strong magnet in the tail of the light, plus an included diffuser for the light, makes this a good light for providing full area illumination where hands-free use is required. Some might use it for repairs under cabinets, but I think this really makes it a great light for using in a tent when camping. Stick it to some metal on a pole at the top of your tent, stick on the diffuser, and you have an overhead light that will evenly light up your whole tent.

Without the diffuser, the light provides a somewhat floody beam that is typical of what you would expect in most 1xAA or 2xAA lights. Good for a general-purpose flashlight. The diffuser turns it into a 360 degree light source.

An overview of the specs follow. I give more details later in the review, as well as a comparison to other lights. You can find the manufacturer’s specs in the site link above. In this review, I give my own measurements, not the manufacturer’s. They’re fairly close, however I find the manufacturer specs are a little over-stated for maximum brightness (600 lumens vs my 500 lumens).

Pictures follow these specs.

Modes: Infinitly variable between moonlight and maximum. The light has mode memory, but not across battery-changes. You can switch to maximum at any time with a double-click. Triple-click for strobe and SOS.

LED: Cree XP-L, 4300K neutral white in my sample. I believe the production run of the light is supposed to use 5000K (perhaps a bit higher output than I tested).

Tint: 4300K neutral white.

Lens: anti-reflection coated. Very well protected by a deep bezel. I like this protection for drops, since an unprotected lens is easily cracked if you drop a light the wrong way.

Size: 107mm long, 24mm diameter.

Weight: 66g without battery in 1xAA config, 88g in 2xAA config.

Construction: Black anodized aluminum. Waterproof (2 meters) and drop-proof (1 meter). Good grip on body. Threads are nicely cut and came lubricated. Lanyard ring (lanyard included), or pocket clip. Feels solid and well built.

Battery type: 1xAA or 2xAA NiMH, lithium primary, or alkaline. Or, 1x14500 lithium ion.

Output: Max 150 lumens (AA), or 500 lumens (14500). Low 1 lumen (either battery type). Stepless for everything in-between. Graph included below. Output is flatly-regulated, except for a pre-programmed step-down from max.

Max (AA) - 4 hours on a 1900mAh Eneloop, but because of a step-down this is mostly at a 75 lumen output. 9 hours run-time on 2xAA.
Max (14500) - 1.25 hours, though the step-down means that most of this is at a 250 lumen output.
Moonlight - 250 hours.

Note that the latest specs list the light as having some form of thermal regulation. I did not see this on my light (it is a timed step-down), so perhaps the production run added this feature. Feedback was provided about this some time ago, so they had time to make some changes.

Throw: 1300/4500 candela (AA/14500). This represents a throw of 70/135 meters, to 0.25 lux.

Heat: No issue on AA battery. Light will get warm on 14500, but a 3-minute step-down prevents overheating.

Beam pattern: Typical of what you would expect in a light this size. It’s a fairly floody beam, but has a nice hot-spot.

PWM: I could not detect any PWM either with my eyes or with a high shutter speed camera. If it uses PWM, it is very high frequency.

Tail-stands: Yes. Also includes a magnet in the tail (which can be removed), that is quite strong and solidly holds the light to any steel surface.

Extras: A diffuser that can turn the flashlight into a lantern. Lanyard, spare o-rings.

Misc: Very low standby current (11 microamps).


Very simple interface, using a single electronic side switch. Click to turn on, click to turn off.

To set a desired output, with the light on simply hold the button to ramp up and down, and let go when you reach the output you want. The light tells you with blinks when you are at minimum, 50, and 100 output.

Double-click anytime to temporarily set the light to max. Double-click (or turn off) to reset the light back to your programmed light level.

Triple-click for some flashie modes. Strobe is first, then press-and-hold for SOS. Thankfully, these modes are not memorized, and you won’t accidentally activate them.

You can optionally lock out the light by slightly unscrewing either the head or the tail (due to anodized threads). Though, because of the very low tail-current and solid switch, there’s really no reason to do this.

My impressions:


- The interface is simple.

- The stepless output level of the light is a nice feature, and you can choose whatever output level you want.

- The included diffuser cone turns this light into a nice camping lantern.

- Tail magnet is strong. Generally, I don’t find much use for magnets on lights, but coupled with the diffuser it makes it very useful.

- Neutral white tint.

- Well made. Waterproof, drop-proof. Though, I’ve come to expect this as standard, it’s still worth mentioning.

- Flat regulation. After the step-down, the light runs at a near constant output until the batteries are almost dead.

- Efficient LED. About 150 lumens/watt out-the-front.

- Supports a wide range of battery types.


- Needs a 14500 to get high output, so I think the light was designed with lithium-ion in mind.

- The step-down on a AA battery shouldn’t be needed. This is only required for 14500.

And now, for some pictures.

Box and contents:

The light itself:

Configured as a 2xAA light:

The diffuser:

The magnet in the tail:

The output graphs:

Good review, thanks. :+1:

Thanks for review, :beer: I like this user interface, probably perfect for this EDC size.
The problem for someone like me that will use with NiMH, … I do not understand this step down from 150 lumens to 75 lumens…after 3 minutes. Have not a lot of sense for me….

(probably I wil buy it one, but is shame, I have some new AA edc this days, but all have problems: this is nice, but regulation and step have no sense, Zanflare F2 terrible interface with memory and strobe in the normal secuence, MT22A bad interface, not so awful like F2, but ……friends manufacturers, so difficult is to combine in the same flashlight a good interface and an acceptable regulation …? )

Does not seem bright on 1xAA

There is only a groove for the pocket clip on the extension tube but not on the first tube in single battery configuration…

Light is not even hot at 500lm. With this body, BW should have push its output all the way to 750lm.

Nice review, thanks :smiley:

Yes, I think they implemented a 3-minute step-down, based on using a 14500 battery. It makes sense in that case. But with 1xAA or 2xAA, it is certainly not needed and I would have preferred it to maintain maximum brightness until the battery is depleted.

If you use AA batteries, you’ll get very long run-times, but not a bright light. If you use a 14500 battery, you’ll get a much brighter light (but correspondingly reduced run-times of course).

I find it’s not bad on AA batteries, because most of the time I usually only use 50-100 lumens on all of my lights (except dedicated throwers). With the diffuser on it, it provides a very useful amount of light in a small room (or tent), even on AA batteries. But if you want the option to use it as a bright light, you’ll want to use a 14500 in it.

One thing I am thinking of doing, is painting the diffuser red (with some kind of translucent ink), then using it as a rear light on my bicycle. It has a strobe mode (triple-click), which would really stand out in traffic with the diffuser. The diffuse light would be seen flashing from all angles, but not be a distraction to drivers by shining in their eyes. On a AA battery, it would run for several hours.

Nice review, thanks! Was looking into this light and wondering if it was really NW tint. Has anyone received an actual production sample and can confirm?


Mine is not blueish cool white but not warm at all. I would guesstimate 5500k. It’s one of the coldest NW I own. So yes it’s neutral but on the colder spectrum, closer to cool white than warm white.

Thanks for your response. How easy would it be to do an emitter swap? (i.e. Glued head?)


Will this flashlight work with flat-top 14500s?

The neutral white tint looks good but the low AA output and stepdown on AA killed it for me.

It seems to, though I’m not sure if it’s designed for that. The head has a flat area for contact, not a spring. So, it may be hit or miss whether there’s enough contact with the positive terminal for it to reliably work. Maybe there’s just enough of a raised portion for it to work, but that’s just from my quick test.

Ok, purchased this to try as it has a heavily discounted promo code currently.

Testing it with my flat-top 14500s (PKCell ICR14500), it does not work at all. I need to put a small disc magnet on top of the 14500 to make it work.

There really is a big difference in lumens output from 14500 to AA (I think with other AA/14500 lights that I tried, usually the AA is about half the lumens compared to 14500 configuration, but for the BW-ET1, the lumens based on specs is about 1/4th only from 14500 to AA. But the listed runtime is extremely long for AA, even more so when using the extension tube.) So it seems this light is used in 2 different ways: for very long runtime, use AA (but get dim light), or use 14500 and get a fairly bright light (for this size flashlight) but reduced runtime. (magnetic tailcap + bundled diffuser are nice features).

I often use a small portable fan to check for PWM in flashlights. The BW-ET1 seems one of the very few I’ve tested that I couldn’t see any PWM (ie. shining the flashlight in lower brightness modes thru the portable fan blades won’t show ‘ghosting’), the few other flashlights I tested that I couldn’t detect PWM using this method are only the Wuben LT35, the BLF A01 copper / CPF Italia A01 (Manker driver), Lumintop Tool AAA… so now I’ve added BW-ET1 to my list of “no PWM detected” flashlights…

Yes, the difference between NiMH and lithium-ion is huge on this light. It’s a similar difference as another light I have, the Reylight Pinapple. Both those lights really benefit from running on a 14500 cell, if you want high output.

does the graph show single or double AA?

Graph is around 4 hours, so it’s single AA. 2xAA seems to slightly more than double the runtime.

since the cells are in serial they add up the voltage and not the capacity.

i'd assume that the output increases towards the lithium numbers..

Actually, that’s not what happens. Output is exactly the same whether you use 1xAA or 2xAA, even though the internal voltage doubles.

I found that odd, too. They must detect a threshold voltage above something like 3.2v, and switch over to high output. I don’t have lithium AA primaries to try out, but two of them (fresh) would supply about 3.4v, so maybe that would kick the light into the high output?