20Kmcd White LED Flashlight, retail $9.99 (
Manufactured by Suncke
Last updated 02-05-08

The Suncke Light flashlight is an aluminum-bodied light that has a single 5mm white LED in the end (rated to output 20,000mcd; measured at over 43,000mcd), powered by a single AAA cell held in its barrel.
The LED & reflector are protected by a glass window (or "lens" if you prefer).

A DC-DC inverter circuit in the flashlight's head boosts the ~+1.5 volts from the AAA cell to the ~+3.6 volts the LED needs.


Getting this light to work is as easy as turning the head clockwise (as if tightening it) until it lights up; turn it the other way to turn the LED back off.

To change the batteries in this flashlight, unscrew and remove the bezel (head), dash it to the ground, and stomp on it with spiked golf shoes...O WAIT!!! THAT'S THE GOOD PART!!! 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 AAA cell that comes out.

Insert a new AAA cell in the barrel, orienting it so its button-end (+) positive faces outward, and screw the bezel back on. Unscrew it slightly when the light springs to life so you don't just waste that new AAA cell.
Aren't you glad you didn't stomp on that bezel now?

Unable to measure current usage due to how the product was constructed.

I'm running a battery discharge analysis on the 20Kmcd Flashlight.
Assuming I don't bump something and queer the test, the machine should poop out a chart on the day of 06-10-07.

Battery disacharge analysis
Here is the battery discharge analysis.
It ran from 6:53am PDT to 10:57am PDT; a total of ~3 hours 30 minutes to 10% intensity (the extra time shown on the right hand side of the chart is because it was below 10% intensity).

I beat the living tweedle out of it (gave it ten firm whacks against the concrete floor of a patio; five whacks against the side of the tailpiece and five whacks against the side of the bezel), and found the expected damage. There is some VERY MINOR gouging to the bare Metaldevimon - er - the bare Metalshogungekomon - um that's not it either...the bare a sec here...THE BARE METAL (guess I've been watching too much Digimon again! Now I'm just making {vulgar term for #2} up! ) on the side of the tailpiece and bezel where it was struck. No optical or electrical malfunctions were detected. It still works as well now as it did when I received it two days ago.

I tried to cut through the window with a folding knife, and I was not successful. This tells me it is made of glass, not plastic.
Would I really try to chop up the window of a perfectly good flashlight?
You bet your sweet patootie (sugar-coated toilet muscle) I would, if it's in the name of science.

This flashlight is splash- and weather-resistant at absolute maximum, but I do not believe it is submersible. There's an O-ring on the barrel that interfaces with the bezel, but I don't know exactly how effective it is. It has a "loose" feel to it, so it may not provide 100% water-resistance. 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 lightly bad weather.

If it fell in water and you suspect it got flooded, disassemble it as you would for a battery change, 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, if somebody squirted a Massengill brand post-menstrual disposable douche at it (and hit it with the douche), or if somebody or something peed on it, rinse all the parts out with fresh water before setting them out to dry. You don't want your flashlight to smell like seashells, flowers, or urine when you go to use it next. Besides, salt (from seawater, pee, or disposable douches) can't be very good for the insides.

There is a wide band of knurling (cross-hatch shaped texturising) on the barrel and on the bezel (head); this helps to aid in retention (the ability to hold onto the flashlight when your hands are cold, oily, or soaked with water, cold coffee, diet Pepsi, gasoline, a digimon's urination, Fanta, pine sap, melted vanilla ice cream, etc.)

The light can be stood on its tailcap to beam onto a light-colored ceiling for use as an electronic "candle".

Beam photograph on the test target at 12".
Yes, that bluish color really does exist, but not quite as intense as it appears in this photograph.
Measures 43,300mcd on a Meterman LM631 light meter.

Spectrographic plot
Spectrographic analysis of the LED in this flashlight.

ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.

Test unit was sent by J.W. of AdvancedMart, and was received on the afternoon of 06-06-07.

UPDATE: 00-00-00

Appears to be reasonably durable at minimum
Nice looking body
Glass lens (front window)
Decent intensity for a single 5mm LED product
Can be stood up on its tailcap

Water-resistance may be an issue - that's what nocked that last star off

    PRODUCT TYPE: 5mm white LED Flashlight
    LAMP TYPE: 5mm LED
    No. OF LAMPS: 1
    BEAM TYPE: Wide spot w/dim corona
    SWITCH TYPE: Twist bezel on/off
    BEZEL: Metal; LED protected by glass window
    BATTERY: 1xAAA cell
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Light splatter-resistance at maximum
    ACCESSORIES: 1xAAA cell, swivel, small wrist lanyard
    SIZE: ~2 6/8"L x 1/2" W
    WARRANTY: 90 days


    Star Rating

20Kmcd White LED Flashlight *

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