EverLED Replacement Bulb, retail $39.99 (www.everled.com)
Manufactured by LEDdynamics, Inc. (www.leddynamics.com)
Last updated 06-20-07

The EverLED is a special LED bulb you put in your already existing flashlight in place of the regular incandescent bulb. It is designed to fit in PR-base flashlights using 1 to 6 cells, and uses the flashlight's own reflector to project its beam.

The EverLED uses a 1.2 watt SE (side emitting) Luxeon Star LED, and hidden away in the bulb base is a special circuit that feeds the Luxeon Star LED exactly the amount of power it wants, regardless if you put it in a 2-cell Ray-O-Vac you might have in the garbage drawer in the kitchen, or a 6-cell Mag Lite you might have in the car trunk.

For the purposes of this page, and because it was handy at the moment, the EverLED bulb was installed in an Aztec 4-AA flashlight. This flashlight has a smooth reflector (not textured or stippled), runs on 4 AA cells, and has a (+) bulb nipple connection (see below).

Your EverLED comes in a hinged, clear plastic jewel-type box, which you might want to hang onto rather than throw away. The instructions that come with the EverLED can be folded back up and kept in this box if desired.

Since this will depend greatly on which flashlight you put it in, this section won't be of that much use.

Generally, you'll need to remove the flashlight head assembly so the PR-base bulb is exposed or can be removed. Remove the flashlight's bulb, and replace it with an EverLED. Then, reassemble the flashlight.

WARNING: If the tip (nipple or end) of the bulb is connected to the (-) negative pole of the batteries, you could let out all the magic smoke of your EverLED and cause it to quit working forever, and you don't want to do that. Please be absolutely, positively sure that the tip of the bulb is (+) positive in polarity before you put the flashlight all the way back together and throw the switch. For most barrel-type flashlights, the (+) button on the top battery touches the tip of the bulb - this is the way it ought to be. But some flashlights have the (-) flat side of the battery at the tip of the bulb, and you don't want that, unless you want to smoke your brand spanking new EverLED and watch that money whirling down a commode.

IMPORTANT!!! See the 02-13-04 update below for an important update about this!!!

Because the battery changing procedure is different for just about every flashlight you can put an EverLED bulb in, this section will be skipped. Just don't put the batteries in backward. :-P

A fan of the website who has one of these measured 440mA on two D cells.

You aren't really supposed to throw it at a wall or step on it or run over it, so I won't have too many results for this section either. As I understand though, the EverLED is water resistant, so if it falls in the {vulgar term for feces}bowl, just fish it out, wash it off under the faucet, dry it off with some toilet paper, and install it in a flashlight where it *really* belongs. :-)

The performance of an EverLED bulb will depend on what kind of flashlight you put it in. I used an Aztec 4-AA light for this page because I happened to have it handy at the moment. You can use it in any flashlight that uses standard PR-base bulbs, runs on 1 to 6 cells (1.5V to 9.0V), and most importantly, has the tip of the bulb going to the (+) positive nipple of its battery. I can't emphasise this enough - the bulb tip MUST be (+) positive, or you'll let all the magic smoke out of your EverLED and it'll stop working!

If you install it in a flashlight with a smooth reflector and the focus is just right, the EverLED should produce a narrow, spotlight-like beam, somewhat reminescent of a Turtlelight 1 but a heck of a lot brighter. There should also be a dimmer corona surrounding the hotspot. There may be some blotchiness of the hotspot; this is completely normal and does not in any way indicate a problem with the EverLED.

The EverLED can be used with a multitude of battery types, including heavy duty, alkaline, lithium, NiCD rechargeables, and NiMH rechargeables. Just be sure the voltage fed to your EverLED doesn't exceed 9 volts, and you'll be fine.

It incorporates something called "Power Squeeze" technology, to get the most power out of regular batteries, yet shut itself down before rechargeables become damaged. This level is around 0.9 volts per cell - when alkalines are considered "used up" and before rechargeables get damaged by overdischarge. I don't know how this circuit works, so please don't ask.

The EverLED bulb also uses something called "LuxDrive" circuitry to regulate the power, and provide a constant level of output until the batteries are almost pooped out; then it dims slowly so you don't get caught with your pants down. This indicates to me that the EverLED is regulated, not just boosted (when used with 1 or 2 cells) or bucked (resistored, for 3, 4, 5, or 6 cells). Regulation assures you of a steady, bright output level until the batteries can no longer provide the necessary drive current; then it starts to slowly dim to use up the rest of the battery power.

The light does appear white, but is SLIGHTLY more greenish than the light produced by a SureFire KL4 and an Arc LSH-P. But when used by itself, it does appear white and not greenish at all. Not in the hotspot, and not in the corona either. If you want that "rotten dog urine green" color, you won't find it in an EverLED bulb, unless you order one of the "factory seconds" at a discount. They are all pre-tested, so you won't get that funny greenish color if you don't want it.

I think you'll get a "cleaner" beam from a faceted reflector flashlight, but your results may vary.

Beam photo on the target at ~12".
Measured 1,560,000mcd on a Meterman LM631 light meter.
I used an Aztec 4-AA light for this measurement.
Your results may and probably will vary.

Beam photo on a wall about 5' away.

Spectrographic plot
Spectrometer plot of the LED in this bulb.
Ocean Optics USB2000 Spectrometer on loan from WWW.TWO-CUBED.COM.

Sample was sent by LED Supply (the EverLED is MADE by LEDdynamics, and SOLD by LED Supply), and was received on 07-30-03.
Sample was installed in an Aztec 4-AA flashlight, because it happened to be handy. It was also later installed in a Turtlelite 1 (another 4x AA flashlight in a similar form factor as the Aztec) and in a dollar store flashlight that looks like a Turtlelight 2 (with faceted reflector) and it runs well in those too.

According to the box it comes in, the EverLED can be ordered with a light color of white, blue, teal, green, yellow, and red. I have no reason to believe you won't get the color you ask for, so go ahead and order away.

UPDATE: 02-13-04
The EverLED now being sold includes reverse polarity protection, eliminating the possibility of smoking yours if you install it in a flashlight with a (-) negative bulb nipple connection, as would happen to the earlier version of the EverLED.

I upgraded the product's rating from 4 1/2 to 5 stars in light (no pun intended) of this development!!!

Because this is Friday the 13th, I was going to not add any updates to the website, and say "Sorry, no updates today" on the What's New page, but if I did that, I'd be lying. :-O

UPDATE: 11-27-04
I have read several reports that the Everled bulb just goes out when the batteries poop out, instead of dimming or dropping into a "moon mode" when the unit falls out of regulation. It's always a good idea to carry a backup flashlight, and this is just one reason why.

Fits in most PR-base flashlights
Very bright beam for an LED
Regulated, to maintain constant brightness for most of battery life
"Power Squeeze" circuitry inside to get the most from the batteries
Works well with both rechargeable and disposable batteries
(As of 02-13-04) Now includes reverse polarity protection!

Will get smoked if you hook it up backwards (See 02-13-04 update - this has been fixed!)
It's a bit expensive - so try not to lose your EverLED-equipped flashlight

    MANUFACTURER: LEDdynamics, Inc.
    PRODUCT TYPE: LED replacement lamp
    LAMP TYPE: 1.2 watt Luxeon Star SE LED
    No. OF LAMPS: 1
    BEAM TYPE: Depends on the flashlight you install it in
    SWITCH TYPE: Depends on the flashlight you install it in
    BEZEL: Depends on the flashlight you install it in
    BATTERY: 1 to 6 cells; AA, C, or D
    CURRENT CONSUMPTION: Unknown/unable to measure


    Star Rating

EverLED LED Replacement Bulb * (www.ledsupply.com)

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