The Griffin TuneJuice is the easiest, most portable way to ensuring that your iPod or iPhone has the juice to make sure you have tunes all through your day. The TuneJuice is a portable charger that runs on AAA batteries, and connects to most iPods and iPhone 3g/4/4s. Unlike other portable chargers, you don?t have to worry about making sure they are charged or plugged in. If you have some AAA batteries, then you?ll be good to go. Provides you with up to 24 hours of music time and 6 hours of video on most iPods. Go ahead, get juiced, and stay tuned.