Battery type: Li Polymer battery; Voltage: 7.4V,11.1V,14.8V, 18.5V; ... requestments, Also, we can provide OEM and ODM service. Battery Type: Li-ion BatteryStandard Voltage: 7.4V / 11.1V / 14.8V / ... 18.5VStandard Capacity: 500 mAh to 50 AhMaximum Charge Voltage: 8 ... temperature: -20 °C to 85 °C Storage humidity: ≤ 75% Lithium ion battery pack