Model: Power Pack Connection type: Micro USBCell type: Li-polymer Capacity (m Ah): 3600 Capacity Range (m Ah): 2000-4500 Charging Time (h): 4 Input Voltage (V): 5 Output Voltage (V): 5 Output Current (m A): 750 Dimensions (cm): 21 x 11.5 x 3.8 Weight (kg): 0.16000