With the range of gadgets I carry around, it have a hard time making sure they are always juiced up, here is a useful gadget designed to keep your gear charged on the go, the Portable USB Power Supply.
The Portable USB Power Supply is a small portable battery that can be attached to your key chain, it comes with a range of charging accessories that will let you charge you mobile phone and other gadgets via USB.
If you want one of these USB charging gadgets then the Portable USB Power Supply is available for $19.99 from Think Geek, you can find out more information over at their website.