[quote]Originally posted by Danno:
WHAT !*#%@!!! You're using a non-Porsche battery in your key? <img src="graemlins/nono.gif" border="0" alt="[nono]" /> Don't you know aftermarket ones are cheap imitations and won't work as well?<hr></blockquote>

HEY! I said they were "Made in Germany"- doesn't that count for something? Damn, I guess I'll just have to tour the factory to try to find some actual originals...

 

[quote]Originally posted by Cass944:
<strong>i actually tried that once. but gave up when i saw how much LEDs cost. im not paying like 3$ for a thing that i probly cant even get to work. hah. but if you can get it to work ill deffenitly be on top of your buyer list.</strong>

Easzy peazy, one LED and one current limiting resistor, no more than £1.50 UK

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[quote]Originally posted by ArcticCzar:
<strong>I tested my current setup by burning the led constantly - rather than in "pulses" - </strong>

three points

1&gt; LED's use less current than light bulbs so WILL last longer

2&gt; no filament so they WONT blow, so no replacment cost;s

3&gt; High intensity types are VEry bright, but will draw more current, but will still last longer than an ordinary bulbe

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[quote]Originally posted by nickhance:
<strong>I kind of want to do this on my own.. Can you write a how-to? All I really need is some way to power the thing, what battery(s) did you use?</strong>

will work off the stock battery, the LED needs a current limiting resistor, usually a 470ohm resistor should do the trick,

solder the resistor in series with the battery,

there is a formula for working out r=v/i
where r=resistance,
v=voltage
i=current, check with the LED supplier they'll tell you how much current it'll draw

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Needed to ressurect this topic.

I went to radio shack today. We paired up a FULLY charged 1.5V 625 battery, and a 1.5 volt bulb. didn't work. We used a 1.5 volt LED too, and the thing was as dim as a dumbass. A 6volt bulb gave the same light.

What the hell is going on??

We even tested it outside of the key head to make sure.

Can someone please help me out here? Is there a specific voltage / amperage that needs to be used?? I can't get any of the bulbs to light up brightly!!!!

 

I have a LED keychain "flashlight" that uses two CR2016 lithium batteries (1.5v each, I believe) in series with NO resistor to a white LED. No doubt this is overdriving it and probably won't last a lifetime, but what do you expect for six bucks?

The batteries are too large in diameter to fit in the key, of course, but small-enough lithium batteries ought to work.

 

You know, the amazing thing is these key lights make Steve's hair look like it's bleached blonde...

Seriously, you can literally use these LED key lights like a flashlight-they are that bright.