Insanely Bright LED Keychain to Flashlight Mod
Keep in mind, this room was pitch black a moment ago. Here’s another fantastic tutorial from Jay, a DIY lasers expert. See all of our DIY LED and Laser Projects.
Take an ordinary, boring LED keychain and turn it into a super powered LED as bright as a flashlight. For a very bright Key Chain LED flashlight, I modified the ‘Task Force’ key chain light from Lowe’s using a Q5 emitter, and a 200mAh capacity 10280 Lithium rechargeable battery. I also modified the light with an aluminum reflector and glass lens to give it some nice ‘throw.’
The Build:
Modifying a clicky switch and circuit:
The 12mm clicky switch has to be ‘trimmed’ or sanded on the edges and corners to fit the tiny host as shown in these pictures…
Modifying a reflector and glass lens:
I machined to size the reflector, and re-sized the glass lens from the Cree light that I linked above…
Of course, I had to trim the emitter to size, and make a custom heatsink as well. The emitter is glued to the custom heatsink with thermal adhesive.
Final Results:
The Key Chain light is very bright now! Using a 200mAh capacity lithium battery, with a 332mA battery current draw, I would expect about 45 minutes between charges. Hope you enjoyed my Key Chain LED flashlight modification! – Jay
This post was submitted by a Hack N Mod fan, just like yourself. If you’d like to earn money from your projects, feel free to contact us.
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August 27th, 2009
I’ve read it several times, but he hasnt actually said what the light source is. LED?> laser diode?
August 27th, 2009
It’s a Q5 emitter. The link is listed right under my first picture…
Jay
November 3rd, 2009
This thing must get pretty toasty.
November 3rd, 2009
Eh, it has a nice heatsink.
November 3rd, 2009
I have it regulated to a max of 332mA’s current draw at full charge…
I built a much brighter Key chain light shown here:
http://laserpointerforums.com/f57/q5-mod-key-chain-cr2-very-nice-44067.html
February 25th, 2010
I’m very interested in this project and would like to get more information on the making the heatsink, reflector, and the modification of the top cap of the light. Thank you for any insight you might be able to provide.