Battery type: Li-ion battery; Capacity: 50mAh to 50Ah; Voltage: 18.5V; Size: different size Application:Led lights, Backup power, clothing, ... , please contact us soon. Battery Type: Li-ion BatteryStandard Voltage: 18.5 VStandard Capacity: 500 mAh to 50 AhMaximum Charge Voltage ... Discharge temperature: -20 °C to 85 °C Storage humidity: ≤ 75% 18.5V Lithium ion Battery Pack