New Brand Apple iPhone 3G Power Station 2200mAh Li-Polymer Input Voltage: DC 5V ~ DC 5.5V Input Capacity: Max. 1.8A Output Voltage: DC 5.1V ~DC 5.5V Output Capacity: Max. 1.2A Capacity: 2200mAh 1: You can use charging cable (not included) to charge the battery of the power station 2: When the battery is full, you can use the power station as external portable power supplier to charge your iPhone anywhere anytime