Peak LED Solutions 1xAA 1xNUV LED Flashlight, retail $29.95 (
Manufactured by Peak LED Solutions (
Last updated 08-05-04

(IMPORTANT: The Peak LED Solutions website is currently under construction)

This is the Peak LED Solutions 1xAA 1xLED flashlight.
It is labelled as coming from the Kilimanjaro Collection. This includes flashlights that use one AA cell and have 1, 3, or 5 LEDs.

Ths unit comes in a brass body, with no surface treatment that I'm aware of.
Because the unit comes in a brass body, it will feel heavier than a flashlight in an aluminum body. I do not at all consider this to be a problem though; the unit actually feels rather stout and substantial in the hand.

There is 1 near-UV LED in the head, and an AA cell inside the barrel powers it.


The light came to me ready to use, with a Panasonic Industrial AA alkaline cell already installed.

To turn the light on, twist the bezel (head) clockwise (as if tightening it). And to turn the light off, turn the bezel counterclockwise (as if loosening it) about 1/8 of a turn from the fully tightened position.

To feed your light, unscrew the bezel (head) until it comes off (don't worry about losing parts or bulbs) throw it in the commode, and flush it away...O WAIT, YOU'LL NEED THAT!!! So just set it aside instead. ;-)

Tip the barrel into your hand so the used AA cell falls out. Dispose of or recycle it as you see fit.

Drop a new AA cell in the barrel, flat-side (-) negative first, so the button-end is showing. Screw the bezel back on, and you're finished. Oh, and unscrew that bezel slightly when your Peak springs to life. You don't want to waste a brand spanken new battery ya know.
Aren't you glad you didn't flush away that bezel now? ;-)

Measures 127mA on my DMM's 2A scale. Since there's an inverter circuit in there, the LED really isn't receiving 127mA. I believe it is receiving 20mA.

Photograph showing the business-end of the flashlight.

The brass Peak will develop a patina over time; this should have no to very, very, very little impact on the beam produced by this flashlight, because the LED itself produces the vast majority of this flashlight's beam. So if the Peak's business-end becomes dirty or develops a patina, you do not have to worry about it.
If you wish to shine the flashlight back up, a common brass polish like Brasso may be used.

The Peak is very durable, and ordinary flashlight accidents (dropping it, whapping it against a doorframe or car door in alarm, sitting on it, stepping on it, sucking it up the vaccume cleaner, etc.) will not damage it. I hit it against a steel rod 12 times (5 against the tailcap, 7 against the bezel), and did not damage the flashlight in any way I can see, and it still works correctly too. Very few flashlights are damaged or destroyed by this test however; maybe I need to come up with something even more destructive.

I ran over the Peak several times with the rear drive wheels of a 400 pound electric wheelchair, and no damage was expected or found.

The Peak has an O-ring that seals the bezel against the barrel, so it should be fully weatherproof, and maybe even submersible to at least a foot or two. Let's try the bathroom basin test and see what happens...BRB...ok, after submerging it for three minutes in about a foot of water at 71F (21.6C) (to simulate a user dropping it into a creek), I dried the outside off with some toilet paper, unscrewed the bezel, and there was no water inside. So yes, weatherproof and submersible to at least 1 foot. You probably don't want to go swimming with this flashlight, but falls into shallow water shouldn't kill it.
I also tried suctioning the bezel by itself to be sure no leakage occurred around the LEDs, and no leakage was detected.
If it falls into water, just shake it off and keep going. If it falls into seawater or if the dog pees on it, douche it off with fresh water, shake it off (or dry it off) and it ought to be good as new.

There is a light knurling (texturising) present on the barrel of the Peak; this helps to aid in retention (the ability to hold onto the flashlight when your hands are cold, wet, or oily). This knurling is not aggressive (sharp), so it won't cut a hole in your pocket if you carry the Peak that way. The bezel (head) has what I believe is a 12-sided shape machined into it. Although this does not function as an anti-roll device, it does help a bit to aid in your grip when you turn the flashlight on and off.

The Peak is equipped with a small split ring on its tail, so you can affix it to a keychain and carry it that way if you desire.

The very tail end is removeable (by unscrewing it), to allow the flashlight to be affixed to a large and sturdy magnetic clamp assembly that you can get from Peak LED Solutions.

This clip has a large, heavy-duty clamp with very strong jaws, a large ceramic ring magnet in its base (under that shiny metal thing at the bottom), and a flexible arm that can be positioned pretty much anywhere.
Once the flashlight's very tail end is unscrewed and removed, the flashlight can then be screwed onto the end of the red arm (a Peak brass CR123A cell 7xLED flashlight is shown in this photograph), and pretty much aimed wherever you need light.

You can also stand the Peak on its tail end when this piece is unscrewed; you can stand it on a dresser, counter, table, or other flat surface and let the light reflected off the ceiling light up the entire room. Well, one near-ultraviolet LED probably wouldn't do the job here, but you get the idea.

There appears to be a regulation circuit inside the bezel (head), potted in a black epoxy compound. This circuit feeds the LED constant power until the battery can no longer provide that power, then the intensity of the LED rather quickly falls off. This is your cue to change the battery. You aren't just plunged into instant darkness, as can happen with some other regulated flashlights.

The flashlight uses one near-ultraviolet (NUV) LED, emitting a dominant wavelength (where you would point to on a color chart) of approximately 408nm. The output appears to be a very deep violet when shined on something that does not fluoresce (glow); but the light will cause fluorescence of "day glow" objects, and objects sensitive to longwave ultraviolet (long UVA) radiation.

Beam photo at ~12".
Wavelength is too short for me to measure.
The LED appears to emit mainly around 408nm.
Color is not that magenta you see in the photograph; it's a deep royal purple to the eye.

Test unit was sent by MJ of Peak LED Solutions along with twelve of their other flashlights, and was received on 08-04-04.

Here's an example of the retail packaging these flashlights come in.

UPDATE: 00-00-00

Durable construction
Waterproof, submersible to at least 12"
Knurled, to aid in retention
Tailcap can be removed to allow flashlight to stand on-end
Uses a cell that is common and relatively inexpensive
Battery rattle problem has largely been solved - no battery rattle is present when handled normally or lightly shaken; one must shake the flashlight rather vigorously to hear any battery rattle


    MANUFACTURER: Peak LED Solutions
    PRODUCT TYPE: Small handheld flashlight
    LAMP TYPE: 5mm near-UV LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium spot, with dimmer corona
    SWITCH TYPE: Twist bezel on/off
    BEZEL: Metal; LEDs recessed into individual cells to help prevent damage
    BATTERY: 1 AA cell
    SUBMERSIBLE: Yes, to at least 12"
    ACCESSORIES: 1 AA cell
    WARRANTY: 1 year


    Star RatingStar Rating

Peak LED Solutions 1xAA 1xLED Flashlight *

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