General Spec Color black Input Voltage 5V 800mA Output 5V 500mA Function used as an emergency battery when you are in vehicle, any situation that you can't charge your phone Compatibility iPod/iPhone 4G Others You can't use the battery charger charge the phone and the battery at the same time. Features Easy to take for it is smart enough and very light. It is easy to charge by only connecting your iPhone to this power station and use your data cable to connect this station and the computer. The battery charger can be used as an emergency battery when you are in vehicle, any situation that you can't charge your phone. Battery type: Lithium-ion battery. Capacity: 1000mAh. Charging time: 2 hours.