Looking for a portable USB device charger, like for an iPod, Zune, or similar portable electronic device? The MintyBoost is a fun kit that lets you recharge on the fly, from a pair of normal AA cells!
This project details a small & simple, but very powerful USB charger for your mp3 player, camera, cell phone, and just about any other gadget you can plug into a USB port to charge! (See below for compatibility tests)
The charger circuitry and 2 AA batteries fit into an Altoids gum tin, and will run your iPod for hours. 2.5x more than you'd get from a 9V USB charger! (See Process for math/calculations) You can use rechargeable batteries too.
This project is suitable for beginners, some soldering tools are necessary but even if you've never soldered before it should be pretty easy.