iBattz 20,400mAh Mojo Battstation Optimus Charger for Smartphones - Retail Packaging - Black Large Capacity 20,400mah Battery Inside Compact Shell Body Uses Same High Power & Efficient "electric Car" Panasonic(r) Battery Cells Dual High-speed Usb Charging Ports Provides Simultaneous Charging Provides 8 Full Charges To Smartphones Or Up To 2 Full Charges On Most Tablets