- Small battery-powered USB charger in an old Altoids Tin.
Picture of Double Capacity MintyBoost with Battery Holder Modification
This project details a small & simple, but very powerful USB charger for your mp3 player, camera, cell phone, and any other gadget you can plug into a USB port...
- Small battery-powered USB charger using Altoid can.
Getting Started - Top 10 Small and Fun Electronics Projects - DIY Electronics
Safely and effectively charge your USB-powered devices when you are away from your computer with this handy charger!
There is nothing more frustrating than being on the road or around and running out of juice in your iPod or iPhone