Griffin Technology 4002-TJUICE TuneJuice Battery Backup for iPod and iPod mini An essential emergency power backup for your iPod Use wherever you can't charge your iPod Powered by standard 9-volt battery Perfect carry-on for airplanes, road trips and ski trips Compatibility: iPod nano (1G and 2G), iPod mini, 3G iPod, 4G iPod with click wheel, iPod Color, iPod Video