I *HATE* dealing with batteries!!!...especially if they are loose!...imagine if your mobile phone required loose batteries to function!....that would be hell!..thank goodness you can recharge with a USB cable!
I got a bunch of spent batteries floating around in the back of my vehicle that don't have enough power for my headlamp (Coast Headlamp)....I have built a Joule Thief which I can use to power some LEDs:
Joule Thief - Google Search
Simple and Fun Little Project!
These Guys Explain the Joule Thief really well and do some cool stuff too!:
Weekend Projects with Bre Pettis: Make a Joule Thief | Evil Mad Scientist Laboratories
PS--Joule Thief on eBay!:
joule thief | eBay
Last edited by qbert69; 03-25-2016 at 04:07 PM. Reason: PS Add!
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