Battery type: Li-ion battery; Capacity: 50mAh to 50Ah; Voltage: 18.5V; Size: different size Application:Led lights, Backup power, clothing, Laptop, MID, ebike, wheel chair, power ... tools, toys...Below are the Details, If you have any problems, please contact us soon. Battery Type: Li-ion BatteryStandard Voltage ... : -20 °C to 85 °C Storage humidity: ≤ 75% 18.5V Li ion Battery Pack