Their description:
Amazon.com Product Description
Got a lot of music and videos on your iPod? The rechargeable Kensington Battery Pack and Charger for iPhone and iPod provides a go-anywhere boost of juice so that the music and videos can keep playing. Simply connect the lightweight Battery Pack and Charger to your laptop or notebook computer’s USB port to recharge it, and you’re ready to give your PDA, cell phone, iPod, iPhone, or other mobile devices the power boost it needs. A go-anywhere,… More >>
Go & get it here - i can recommend it:
Kensington Battery Pack and Charger for iPod; iPhone 1G, 3G
Does anyone know if this works with the newest iTouch (the one with the speaker) since most of my old iPod gadgets do not work with the new iTouch??? I really want to get one but need to make sure it works right.