Voltage: 3.7V, Capacity: 900mAhMax Constant Charging Current: 900mA(1C), Max Constant Discharging Current: 1800mA(2C)Battery size: 18mm (diameter) * 35mm (length)Suitable for cameras, watches, LED flashlights, headlights, quadcopters, calipers and other electronic devicesWarning: Fire, explosion, and burn hazards. Do not use the battery beyond the permitted temperature rangeNo need to replace frequently as cycle life can reach 500 times