Battery Description: Battery parameters: Battery capacity: 1500mAh; Number of monomers: 2cell; Specifications: 18650HP Battery Standard Voltage: 7.4V (2S1P); Battery weight: about 91g; Battery size: 2S / 66 * 37 * 19mm ± 0.5mm (length * width * thickness); Discharge plug: SM4 black plug; Charging plug: SM4 black plug; Use of the environment: Storage: Temperature (15~35'C); Relative humidity (45-75%); Atmospheric pressure (86-106Kpa) Discharge: -20-60'C; Standard charge: 0~45'C; Relative humidity: <93%