Main Features Product Features 1. Use 1800mAh batteries to power it and the output is 5V/1000mA max 2. Talking time of iPhone can last about 60-180min after charging. The stand-by time is over 48hour. 3. Solar panels and mini USB input 2 in 1 Specifications USB Input: 5V 500mA solar panels£º5V¡Ý200mA Charging current: 3.6V: 500 ¡À50 mA Charging voltage£º3.6VDC