Targus BUS0294 Backup Battery for iPad 2 and BlackBerry Charging Dongle Designed for the iPad and Smartphones Includes BlackBerry charging dongle 5.0 V, 2.1A output Provides users with an additional 5 to 10 hours of use Charges a Smartphone 3 to 5 times on single charge Features a 4 level LED battery indicator Thin and compact size Compatible with Targus USB Fast Charger