Parameter This Ebike battery is 48V 20AH, suitable for 1500W/1200W/1000W/750W/500W motor(50W-1500W) motor. Max constant discharge current: 40A. Size: 365'90'110MM. Charger: 54.6V 2A . Discharge:XT60(Male&Female Side) Key Features The electric bike battery with battery base that will fit for most bike frame. //Lock with keys securely locks the mount on bike frame, prevents the battery from being stolen. // Lighted battery LED power Indicator, inform you charge your battery on time. // Each pack have ran through a full charge and discharge test in produce, make sure you getting every amp hour you paid for. 80% Capacity After 800 Cycles UPP has implemented a strict high quality management policy:Every Lithinum battery have pass the QC appearance and function test before shipment. The Ebike battery charge cycle exceeds 1000 times. All new UPP batteries enjoy a 1-year support .