Connection type: Micro USB (Universal Serial Bus), Universal Cell type: Li-polymer Capacity (m Ah): 4800 Capacity Range (m Ah): 4500-7500 Charging Time (h): 6 Input Voltage (V): 5 Output Voltage (V): 5.3 Output Current (m A): 1000 Max Dimensions (cm): 19.5 x 12.5 x 4.3 Weight (kg): 0.230