Xtreme Universal USB 1800mAh Ultra Slim Battery Bank - Retail Packaging - Black recharge any usb powered device on the go compatible with mobile phones, tablets and e-readers iPod, iPhone, and nano devices recharge power bank via computer, or usb adapter led indicators show battery's capacity 1800mah power charge time varies by device recharge any usb powered device on the go compatible with mobile phones, tablets and e-readers iPod, iPhone, and nano devices recharge power bank via computer, or usb adapter led indicators show battery's capacity 1800mah power charge time varies by device recharge any usb powered device on the go compatible with mobile phones, tablets and e-readers iPod, iPhone, and nano devices recharge power bank via computer, or usb adapter led indicators show battery's capacity 1800mah power charge time varies by device