[Review] Folomov EDC C1 Flashlight


A new 10440 light has hit the market! It’s on pre-order at Illumn.com, and the guys there sent an early release model to me for a look. Of course I’m interested – it ticks a bunch of my boxes. Nichia, Brass…. Here’s my review of the Folomov EDC C1!

Official Specs and Features

Here’s a link to the product page at Illumn. The light isn’t up on the official Folomov site yet.


There is only one version of the EDC C1.


The price is $34.90, and this is available on preorder from Illumn.com.

Short Review

Even though the Folomov EDC C1 doesn’t hit the claimed numbers, I like it a lot. It’s a complete package light (including the cell) and it is sufficiently bright for the tasks I’ll use it for. I don’t think the low mode is quite low enough, and the stepdowns on Turbo and High happen too quickly. But overall I am still very happy with the light.

Long Review

What’s Included

  • Folomov EDC C1 Brass flashlight
  • Unbranded 10440 with charge circuit
  • Spare o-rings (2)
  • Manual

Package and Manual

The EDC C1 ships in a tin, approximately the size of an Altoids tin. Inside the light is held in place by some foam.

The manual is quite nice, and includes all the specs and other information about the light. It’s a quite good manual.

Build Quality and Disassembly

There are a couple of things you’ll notice right away when handling this light. First, is that it is indeed brass. Second, it’s actually some sort of coated brass. So there’s a brass smell, and the brass weight, but the light is unlikely to patina very quickly (if at all).

Then you’ll notice that the EDC C1 is a e-switch tailswitch light! Unusual!

Build quality is good.

Only the tail of the light has a spring. The head end has only a brass button.

The threads are very short, and square cut (a huge surprise in a light like this!). The body is highly decorated, which might be seen as good or bad.

The single spring provides adequate protection for the cell, though.

Only the tailcap is removable. The cell goes into the light in the normal orientation (positive toward emitter).

Size and Comps

Officially: Body Diameter: 13.5mm
Length: 66.8mm
Weight: 34.5g with battery

This is a very small light! As a 10440 light should be….

It’s not the smallest AAA sized light – in my collection that award goes to the Olight i3E EOS. Of course that light is a single mode, and the Folomov is quite a bit more feature rich!

Here’s the light in hand.

Retention and Carry

A pocket clip is included and ships attached to the light. One of the polarizing features of this light is that the clip attaches only on the head, which means bezel-up carry.

It’s a friction clip, and can be removed. The clip itself is quite nice. It has a big mouth and ample shoulder, so it’s easy to get on pockets, and roomy enough to sit easily. I would probably prefer bezel down carry (my favorite AAA light does use that setup) but bezel up isn’t a deal breaker, nor something I can’t get used to.

Power and Runtime

A single 10440 cell powers this light. Only li-ion will work; other types of AAA sized cells will not. NiMH, primary alkaline, etc. Those won’t work.

I performed runtimes with the included cell. The light never reaches the claimed output of 335 lumens by my testing (corroborated by other more sophisticated testing measures, too). The initial output on turbo is around 240 lumens by my testing – still quite a respectable number. I test this to be drawing around 1.5A, too, so there’s not actually too much improvement to be made – this emitter tops out on output at around 2A.

Surprisingly the light doesn’t get all that hot during these tests.

Interestingly the 30 second output is the same for Turbo and High – at a measured 100 lumens.

I tested (but didn’t graph) the light with an Efest 10440, and the output max is the same. No difference at all. So while the Folomov 10440 might be smaller because of the charge circuit, it’s just as capable as the Efest 10440’s I have.

See below the charge circuit on the top of this cell. It’s a micro-USB port – just insert the plug and charging will commence. While the cell is charging, a red indicator will light on the positive end of the cell. When charging is complete, there will be a green indicator there.

It’s easy to see in the photo below how much of the cell length is actually charge circuit. Maybe 1/4 of the cell size? Probably a decent trade off though, because the average charger will not be all that fit for a 10440 cell. These cells need a slow charge rate!

And this built in circuit provides that slow rate; the max charge rate is around 0.35A. That’s probably around 1C (though I don’t see capacity for the cell reported anywhere). My test (which records from the USB source) shows around 210mAh went into the cell. (And that’s 210mAh at 5V, so you could math it out to see the actual capacity – something like 250mAh). The charge circuit looks great, too.


Surprisingly there appears to be PWM on all modes except Turbo. I say “surprisingly”, because I can’t see a single bit of PWM at all. And I’m super sensitive to PWM. I call this a win, and if I were you I wouldn’t worry about this at all.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.

User Interface and Operation

There’s a single switch on the EDC C1. It’s a tail e-switch. There’s a nice flat rubber cover, and with little effort the light will tailstand on this switch. The switch isn’t loud at all, but does make an audible “click” when …. clicked.

An e-switch in the tail of a light is unusual!

Here’s a UI table! It’s a fairly feature rich UI. There are even two groups! The default is the “Illumination Group”, which is described in the table below.

State Action Result
Off Click On (Mode Memory excluding Turbo/Moon)
Off Hold Moonlight
Any Double click Turbo
On Click Mode Advance (LMHML)
Turbo Double Click Special Modes (And then special mode advance) (Strobe>SOS>Beacon>Turbo)
On Hold Off
Off Click 3x Lockout
Lockout Click 3x Unlock (to “Off”)
Any Click 7x Switch to Tactical Group

Below is the table for the Tactical Group.

State Action Result
Off Hold Turbo
Off Click Turbo
Any Double Click Strobe
On Click Off
Any Click 7x Switch to Illumination Group

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
Turbo 335 0.5h 100* 1.48
High 150 0.8h 100* 0.53
Medium 40 1.2h 37 0.12
Low 8 4.8h 11 0.04
Moonlight 0.5 30h ~ ~

* Measurement at 30s, per runtimes above.

LED and Beam

One of the very unusual things about this light is that it’s one of the first production lights with a Nichia E21a emitter. This is a 3000K temperature, and >95 CRI. (To be honest, this light had me right there – it’s great to try new emitters, and this one’s interesting in it’s own right – and for ~$35 in a brass light – yes please.)

The reflector is smooth, and coupled with the domeless nature of the E21a, provides a surprising amount of throw for such a tiny package. It also means that as a keychain light, there’s probably more of a spot than is needed. But for walking around the house at night and checking on kids or whatever, this light is fantastic!!

These beamshots are always with the following settings: f8, ISO100, 0.3s shutter, and manual 5000K exposure.

Tint vs BLF-348 (Killzone 219b version)

This is the same shot as above, but exposed differently, for easier beam comparison.

I compare everything to the Killzone 219b BLF-348, because it’s inexpensive, has the best tint, and [probably] still available!

The Big Table

Folomov EDC C1
Emitter: Nichia E21A, 3000K 95+ CRI
Cell: 10440
Runtime Chargetime
LVP? Yes
Power off Charge Port with no Cell?
Claimed Lumens (lm) 335
Measured Lumens (at 30s) 100 (29.9% of claim)*
Claimed Throw (m) 62
Throw (Calculated) (m) 45.5 (73.4% of claim)
Candela (Calculated) in cd (at 30s) 65lux @ 2.819m = 517cd
All my Folomov reviews!

* Standard measurement disclaimer: I am an amateur flashlight reviewer. I don’t have $10,000 or even $1,000 worth of testing equipment. I test output and such in PVC tubes!! Please consider claims within 10% of what I measure to be perfectly reasonable (accurate, even).


What I like

  • Brass
  • Nichia E21a in a production light!
  • Complete package light
  • Multi-group UI
  • Main Illumination Group has a good selection of modes
  • Good clip
  • E-switch in the tail, an unusual feature

What I don’t like

  • Doesn’t work with AAA cells of any nature except Li-ion
  • Bezel up carry only
  • Doesn’t hit the manufacturer’s claim
  • Moonlight is too bright
  • LMHML order doesn’t really work for me
  • Mode memory


  • This light was provided by Illumn.com for review. I was not paid to write this review.
  • This content originally appeared at zeroair.org. Please visit there for the best experience!
  • Whether or not I have a coupon for this light, I do have a bunch of coupons!! Have a look at my spreadsheet for those coupons. It’s possible to subscribe and get notifications when the sheet is edited!!

Great writeup!
I always enjoy reading your reviews, and thanks for the outstanding photos.

I like my Folomov C1 very much.
I agree with your comments that I would prefer no memory, and I wish the lowest mode was lower.

I do not love the UI, I wish it would click off, instead of hold for off. If its going to have memory, I wish it could memorize the lowest mode also.

Also agree the maximum mode is less than spec, but I still really like the brief burst of power, as an option.

I love the LED, and the CRI.

I also cannot see the lumen fluctuations.

Yes I would buy it again, and yes I recommend it.

IF it had a keychain attachment point, it would also make a great keychain light, but, no matter, I actually prefer not to put a light on my minimalist keychain, and I prefer to use a light, off my keys. Theres no perfect light, or else I would not own so many… LOL

I like how it looks, but there are too many problems with this light.
1 - it should only have one mode. Who needs more modes in such a small light? nobody… So the UI sucks.
2 - it’s missing some kind of keychain attachment hole.
3 - doesn’t work with AAA…

thanks for sharing your points of view
it sounds like you might enjoy the Sofirn C01, it does everything you want, single mode, keychain, and AAA

for me the Folomov is a GREAT light
I like that it has more than one mode, which makes it very versatile

I do not like to keep a light on my keychain, so not an issue for me

I love that the light comes with a USB rechargeable battery, so people who I might give one to, that would stop using it when it runs out of batteries, dont need to worry about buying batteries, or managing rechargeable eneloops

and I LOVE the LED

I also really like how small the light is, AND that it is made of a antimicrobial metal

I own all the lights in this photo, and I choose to carry the Folomov, despite its imperfections

in fact, this is my Dynamic Duo, the Folomov has earned a place in my EDC pockets

This looks terrible

I need more than 1 mode.

Got mine yesterday and I agree with all this - especially the last sentence!

Great review - thank you.

I actually prefer the higher voltage cells, so the AAA option is no big deal to me. If it is, there are many AAA lights in my collection - some with Nichia 219 and tail switches, that will use AAA. (Seems like every time I turn around Massdrop has some variant of the Lumintop for sale.) What sealed me on this one was the different LED. It looks very close to the R9080 Nichia 219B SW35 that a few of my lights have….and I love that tint.

The appeal of these small lights for me is those days when dress pants are required. The normal EDCs seem a little heavy - these little lights are great for those days. This little light has that appeal plus the appeal of the tint. Plus it’s a solid “budget” light. YMMV.

I also really enjoy a warm options:

we just had a small “group buy” of triple sw35:

pic is a link

there is still time to get in on that order if you like, PM me

Are the runtimes on this light so bad because of an inefficient LED?

The runtimes, especially for the lower outputs, seem very short. Shorter than many 1AAA lights.

The driver is very inefficient in this. The whole system gets about 46 lumens per watt on average over the whole runtime, even worse on moonlight. The E21A is much better than that.

Folomov is smaller, lighter, warmer, and does not suddenly go dark

the battery is UNprotected. Therefore, I cannot recommend the Folomov.
I found the light would not turn on after living in my pocket, and the battery was at 2.6v.

The Folomov wont turn on with AAA, so I recommend the Lumintop Tool over the Folomov.

I’d have to see a lot of outstanding successes from Folomov before considering one of their lights. The emitters being damaged by turbo on this and whatever that 319A light they released a while back is unacceptable.

I see that the Folomov websites shows a new model, confusingly named EDC-C1 though it’s actually somewhat different and clearly not meant as a replacement but rather a slightly different light.
Old, I’ll call it C1.1
New, I’ll call it C1.2


C1.1 C1.2
Material brass alu
length 66.8mm 70.9mm
diameter 13.5mm 14mm
LED 3000K CRI98 (call me suspicious) 5000K CRI80
reflector SMO? OP
lm 335 400
cd 951 1280
mode sequence L-M-H-M L-M-H

I have a feeling they view C1.1 as a connoisseur item while C1.2 is more general purpose.
I also don’t quite understand the performance increase. By changing CRI/tint they got 19% higher output and 34% better intensity while changing reflector from SMO to OP. From the look of the head it seems that the new reflector has slightly larger effective diameter which may be a partial explanation. Maybe the previous reflector was not focused properly or something. The numbers seem weird.

Thanks for the heads up. I didn’t buy the first version because of the LMHML mode sequence and short runtimes.

I wish they’d used another high CRI LED in the revised version. The low CRI may stop met from buying the new version.

I’ll definitely give the new version a close look.

I like the look of the new aluminum version.

At only 24g, it should make a great hat brim light. I’m currently using a Folomov EDC2 for that purpose.

The runtimes and 80 CRI don’t impress me much, but the rest of the features are to my liking.

I’m sooo tempted to buy one of the new versions for a neck lanyard light. I like it better than heavy brass. Two things stop me though. The lack of a lanyard hole in the tail, and the low cri 5000k emitter.

Neck lanyard lights are my “creeper” light for when I’m moving around camp and the house, trying not to disturb others and also preserve my night vision. I prefer incandescent type color for these types of lights.

Illumn has the v3 brass version, and according to them they test at an actual 2 lumens on moonlight which is unacceptable.

What a shame, they could have had a hit with this light. I love the size and electronic tail clicky.

Maybe I’ll buy an aluminum version, press fit a lanyard sleeve on the tail, and change the emitter. The sleeve can be made thin so it doesn’t add too much to the diameter, can be higher than the switch so it can tail stand and to avoid accidental activation and have a hole in it for a lanyard or key ring. Maybe I’ll make it have a clip on it too, for lens down carry.

Cad drawing of said lanyard sleeve forthcoming.

Zeroair as reviewed it here:

Actually, he calls it Version 3 ! :+1:

That’s just the most recent update of the Brass/3000K version, the other new one is aluminum w/5000K 80CRI emitter.

Sorry, you’re right! :beer:
As both are the “new” batch, I didn’t make the difference bewteen the body material and focused on the revisions made to the light as a whole!

The original at the hotspot