1xAA 8xUV LED Flashlight, retail $0.99 (Purchased via Ebay)
Manufactured by (Unknown)
Last updated 01-11-05

This unnamed flashlight is an aluminum-bodied light that has 8 near-UV LEDs in the end, powered by a single AA cell in the barrel.

Because it is powered by a single AA cell, there is a DC-DC inverter inside to boost the 1.5 volts from the battery to the 3.6 to 4.0 volts the LEDs need.

It is advertised as being waterproof, but I'd prefer to think of it as splash-resistant - it fails the suction test, but not miserably so.


Feed the flashlight an AA cell first (see directly below), and then you'll be ready to rock.

Push the button on the barrel until it clicks and then release it to get light. Press and release the button the same way again to not get light.

There is no momentary or signalling mode available when the flashlight is off, but you can blink it while it's on by pressing the switch less firmly (before it clicks).

The flashlight comes with a wrist lanyard, which is outfitted with a very small split ring. Using this split ring, you can affix the lanyard to a small hole in the tailcap if desired.

To change the battery in this flashlight, unscrew and remove the tailcap, dash it to the ground, and stomp on it with spiked golf shoes...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the open end of the barrel into your hand, and dispose of or recycle as you see fit the used AA cell that comes out.

Slide a new AA cell into the barrel, button-end (+) positive first, and screw the tailcap back on.
Aren't you glad you didn't stomp on that tailcap now?

Measures 300mA on my DMM's 4A scale.

Photograph of the bezel, showing the 8 LEDs inset in cells for them.

This flashlight appears reasonably durable, but it is not.
When I gave it my "new and improved" smack test (ten whacks against the corner of a concrete stair; five against the side of the tailcap and five against the side of the bezel), it experienced an electrical failure - in other words, it's intermittent now.

After removing the bezel and then screwing it back on, it started to work properly again.
So if your flashlight quits after falling, check this first - remove & replace the bezel and see if that fixes things.

Physically, only the expected amount of very minor scuffing and gouging was found on the bezel and tailcap where it was struck.

The flashlight has a black Type II anodizing on it. I was able to scratch through the finish with the blade of a Swiss army knife. It is more than reasonably durable though. So it should stay looking new for a long time, even if it goes up against keys or flashlights during storage or transportation.
Would I really try to cut up a perfectly good, brand spanken new flashlight?
You bet your sweet patootie I would, if it's in the name of science.

This flashlight is splash-resistant, but not totally waterproof. When I removed the tailcap, relieved the flashlight of its battery, and then performed that dreadful suction test on it, some leakage was detected. So please try not to drop it in creeks, rivers, ponds, lakes, oceansides, docksides, puddles of wild boar pee, slush piles, mud puddles, tubs, toilet bowls, cisterns, sinks, fishtanks, dog water dishes, or other places where water or water-like liquids might be found. A little rain or snow probably wouldn't hurt it though, so you need not be too concerned about using it in moderately bad weather.

If it fell in water and you suspect it got flooded, disassemble it as you would for a battery change, dump out the water if necessary, and set the parts in a warm dry place for a day or so just to be sure it's completely dry inside before you reassemble and use it again.

If it fell into seawater or if somebody or something peed on it, douche all the parts out with fresh water before setting them out to dry. You don't want your flashlight to smell like seaweed or piss when you go to use it next. Besides, salt (from seawater or pee-pee) can't be very good for the insides.

The beam output by this flashlight is a circular, wide spot with a very dim corona. Dominant wavelength (where you would point to on a color chart) appears to be 400nm to 402nm.

Considering this flashlight uses just one AA cell, it is very bright.

Beam photo at ~12".
Color is not magenta like this photograph shows.
Beam has a deep, dim royal purple color to it in real life.

Wavelength is too short for me to measure the intensity with the equipment at my disposal.

Test unit was purchased on Ebay on 01-04-05, and was received on the afternoon of 01-11-05.

UPDATE: 00-00-00



    PRODUCT TYPE: Small handheld flashlight
    No. OF LAMPS: 8
    BEAM TYPE: Wide spot with very dim corona
    SWITCH TYPE: Rubberised pushbutton on/off on barrel
    BEZEL: Metal; LEDs recessed in cells for them
    BATTERY: 1xAA cell
    WATER RESISTANT: Splash-resistant at least
    ACCESSORIES: Wrist lanyard
    WARRANTY: Unknown/not stated


    Star Rating

1xAA 8xUV LED Flashlight *

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