Waterproof?‍♀️The bicycle battery can be used for a short time in light rain. It is not recommended to ride in heavy rain. Please protect the battery to prevent water from entering.Safety?‍♀️Use the standard DC charger, charger comes with protection function. Red light-charging, green light-charging OK, stops automatically when the battery is full.Matchable Motor?‍♀️This battery pack has high compatibility and can be compatible with 100W ~ 800W motors. with battery base will suitable for most of bike, with rear rack is optional.Battery type: Lithium-ion batteryBattery voltage: 36V 48VRated capacity: 10AH 12AH 15AH 18AH 20AHSuitable for motor: 100W 250W 350W 500W 720W 750W 800WBattery size: 440*160*60mmCharging time: 5-7 hoursMaximum constant discharge current: 20A/30ACharging voltage: 42V/15AH. 54.6V/20AH 720WHCycle life: about 1000 cyclesWorking temperature: -20-60℃Shipping Contents:Battery, fixing plate, shelf(optional), accessories, keys,charger.Installtion:?Open the safety lock after receiving the battery and separate the battery from the mounting plate.?Fix the mounting plate to Ebike, and make sure that the end with the discharge cable is downward.?Connect the discharge plug to the plug of the controller.