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5 Years Warranty

UC15 Keychain Flashlight

UC15 Keychain Flashlight


The Acebeam UC15 may look cute, but this keychain flashlight is a serious tool from the makers of one of the brightest and best-made flashlights in the world with max 1000lumens. It is the best keychain flashlight that features three unique LEDs with ultra-compact size.

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LED Option 1: 1xCree XP-L2 + 1xNichia 276A 365nm + 1xCree XPE-R2 LED
When using 2x10440 batteries
Moonlight: 5 LMS, 46h, 6m, 10cd
Low: 140 LMS, 2h 24min, 38m, 360cd
Mid: 300 LMS, 1h 6min, 59m, 860cd
High: 600~200 LMS, 4min+30min, 80m, 1600cd
Turbo: 1000~200 LMS, 1min+46min, 107m, 2880cd
Strobe: 1000 LMS 
Red: 1.5h
UV: 1.2h

Battery Indication:
Indicator Lighting Green > 3.3V
Indicator Lighting Red among 3.1-3.3V
Indicator Lighting Red&Flash < 3.1V
Turn off automatically < 2.7V

When using 2xAAA (Alkaline/Ni-MH) batteries:
Moonlight: 5 lms, 37h, 6m, 10cd
Low: 30 lms, 7h 30min, 18m, 80cd
Mid: 60 lms, 4h, 25m, 160cd
High: 105 lms, 2h, 35m, 300cd
Turbo: 250 lms, 1h 6min, 51m, 650cd
Strobe: 250 lms
Red: 1.6h
UV: 1.3h

Battery Indication:
Indicator Lighting Green > 1.05V
Indicator Lighting Red among 1.05-0.95V
Indicator Lighting Red&Flash < 0.5V

Max Runtime: 46h
Max Beam Distance: 107M
Peak Beam Intensity: 2880CD

LED Option 2: 1xNichia 90+CRI + 1xNichia 276A 365nm + 1xCree XPE-R2 LED
When using 2x10440 batteries
Moonlight: 3 lms, 40h, 11m, 32cd
Low: 100 lms, 2h 30min, 41m, 423cd
Mid: 250 lms, 1h, 63m, 1008cd
High: 450~170 lms, 2min+47min, 82m, 1701cd
Turbo: 750~170 lms, 2min+36min, 111m, 3100cd
Strobe: 750 lms
Red: 1.5h
UV: 1.2h

When using 2*AAA (Alkaline/Ni-MH) batteries:
Moonlight: 3 lms, 33h, 10m, 25cd
Low: 20 lms, 7h, 18m, 80cd
Mid: 50 lms, 3h 42min, 28m, 190cd
High: 100 lms, 128min, 37m, 340cd
Turbo: 250 lms, 41min, 59m, 860cd
Strobe: 250 lms
Red: 1.6h
UV: 1.3h

Max Runtime: 40h
Max Beam Distance: 111m
Peak Beam Intensity: 3100cd

Working voltage: 0.9V - 4.2V
Impact Resistance: 1m
Water Resistance: IP54
Size: 66.10mm (Length) x 29mm (Width) x16.3mm (Thickness)
Weight: 39g (without battery)
Aircraft grade aluminum body structure
Premium Type III Hard Anodized Anti-abrasive finish
Stainless steel king ring connector
Ultra-clear tempered glass lens with anti-reflective coating
Mini Key Chain Light is one of your indispensable companions when daily use,hiking, reading,searching and so on.
Note: Low battery warning when red light indicates flash.


Existing reviews

Best keychain flashlight
There are many keychain flashlights out there, but none are as impressive and useful as the Acebeam UC15. This is a keychain flashlight for people who want a powerful light and don't mind the trade-off; this is slightly bigger than other keychain lights (but still smaller than most EDC flashlights in general). It's about the same size as the keychain fob that I use to unlock my car.

You don't have to use it as a keychain light. It works great as a "pocket rocket", a small light that lives in your pocket and has disproportionally more power than its size would make you think. You can install the included clip if you want to attach it to a cap (to use like a headlamp), or a belt or pocket for quick access.

I love that it has a red LED, a UV LED, and a standard white LED. It's easy to switch between the colors, and these LEDs make the light useful in a variety of situations. Just for fun, turn on the UV and look at the doorknobs in your house - it reveals that you need to clean them! There is room for improvement in the color LED group. Just like the white LED, the color LEDs should have low-mid-high to make them more useful and help with runtime. Currently the only way to change the brightness of red/UV is to change batteries: 10440 Li-ion is brighter, AAA NiMH is dimmer. With 10440 Li-ion, red is so bright that it doesn't preserve night vision, which is what many people might use it for, but it's more usable for that purpose with AAA NiMH.

Speaking of batteries, another thing that makes the UC15 stand out among keychain flashlights is the ability to use two 10440 Li-ion batteries, or two AAA. Get some button-top 10440 batteries for more lumens (Acebeam sells 10440s, as do many other online retailers) or use AAA batteries (I recommend eneloop) for longer runtime with less lumens. The UC15 also works when only one battery is inserted. Having easily replaceable batteries makes the UC15 so much better than other keychain lights, for several reasons: (1) You can bring extra batteries if you expect to need more runtime. (2) The ability to work with one battery or buy a battery at a nearby store could be useful in an emergency situation. (2) As battery technology advances you can easily "upgrade" your UC15 with better batteries. (3) A typical keychain light is basically trash because they usually have a built-in battery that wears out after 3 years, and the only option is usually to dispose of the light in the garbage. Don't buy trash. Buy the UC15! When your 10440 batteries wear out (in 3 to 10 years, depending on usage), you can just buy more batteries and keep using your UC15!

The user interface is good. As you might expect for a light with multiple LED colors, it may take a few minutes to learn for the first time. It memorizes your last used mode (only red or UV or white are memorized; it does not memorize moonlight or turbo). It has a lockout, which is toggled by holding the button for 5 seconds. I appreciate the mode memory and lockout features.

Hopefully the successor to the UC15 will have brightness options added for each LED color. And a high-CRI white LED for even more utility and enjoyment. And a moonlight mode that is less bright, like 1 lumen or less (or just have a moonlight group and memorize the last used option in the group). And, if possible, a slightly slimmer and more waterproof design. Even without those suggested improvements, the Acebeam UC15 is the best keychain flashlight available today!
| 7/10/2022 9:33 AM
The best of multifunction
Single or double power

White, red and UV; single button; IP54; 0,5 - 4,2 V (single cell AAA, two cells AAA, single cell Li-ion, double cells Li-ion, Li-FePO, NiZn, NiMH, NiCd, Alkaline or anything with voltage). Single cell of Li-ion produce too high current and battery lifespan is very short (my single cell of Li-ion 300 mAh withstanded 20 cycles. That cell has 16 mAh now).
I have one, silver, (second, black, has my wife), three years, and it is excellent. I use it for speleology and mining, not only as a backup light on my helmet.
Only one weakness is sillicon button, wears out very quickly.
That 1 klm is like a rocket, that I took out of mx pocket and that stronglight is from my hand, only from hand. Everybody behind me cannot see any large flashlight in my hands, they cannot see anything more than little Acebeam UC15!
Design is so futuristic, I like uncovered screws, glass and anything with function, accesories is good.
It would be good to have a gasket under the plug for better IP.
I'm waiting for next gen of this excellent multifcion light. Maybe UC15-II?
| 10/19/2023 4:10 AM
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