Model: PB-8000 Connection type: Universal, Micro USBCell type: Li-polymer Capacity (m Ah): 3500 Capacity Range (m Ah): 2000-4500 Charging Time (h): 4 Input Voltage (V): 5 Output Voltage (V): 5 Output Current (m A): 1000 Dimensions (cm): 15 x 9 x 3.3 Weight (kg): 0.187