Griffin Technology Griffin TuneJuice Universal - 5v USB Charger uses 3 x AA batteries (GC23058)

We all know the heartbreak of dead batteries. Don't let it happen to you. TuneJuice Universal uses three readily-available AA batteries to charge your MP3 player or other USB-charging device. Just slide open TuneJuice Universal's battery compartment, pop the batteries in, and plug in your device's USB charge/sync cable. We've even included a fresh set of batteries to get you started.A must-have for travel, camping or anywhere else you might face the bleak prospect of dead batteries.