Extra Battery for the Urban Electric Bike UB-1Battery specificationsBattery: Rechargeable Li-ion batteryModel: 36V 12AhCharging time: 6-7 hoursVoltage: 36 VoltsBattery cells: 40 cellsPerformance: 12 AhOperating temperature: -20 - 60 ° CelsiusCharging temperature: 0 - 45 ° CelsiusShelf life: 6 monthsStorage temperature: -20 - 25 ° CelsiusStorage humidity: 60 (+/- 25%)%Range: Up to 80km depending on driving style