?Parameter?Built in Top A Grade Cell, 13S5P. This rear rack replacement bike battery is 48V 15AH, built-in A grade high quality brand 18650 lithium cell, suitable for 1000W/750W/500W(200W-1000W) motor. Max constant discharge current: 30A. Size: 36*15*6.8CM. Charger:54.6V 2A . //Discharge connector: Male&Female side of Anderson Connector. ?Key Features? The battery has waterproof and sand protection, you don't have to worry about riding. //The battery level light can inform you to charge in time.// Waterproof IP65 and solid aluminium case, stronger a lot than normal plastic case.//Lock with keys securely locks the mount on bike frame, Anti-theft device to protect you from battery lost . ? ?80% Capacity After 800 Cycles?UPP has implemented a strict high quality management policy:Every Lithium battery have pass the QC appearance and function test before shipment. The Ebike battery charge cycle exceeds 1000 times, life expectancy of up to 5 years. ?Safety & Convenient?High quality electric cells and built-in a 30A BMS protective plate, prevent over charge, over discharge, over current and short circuit and ensure the long life expectancy. ?One Year Quality Warranty and Lifetime Technical Support?We are not only the seller but also a professional manufacturer. We has been in long-term cooperation with Samsung, LG, Sanyo . All new UPP batteries enjoy a 1-year warranty . We have technical team based in US. offers the best customer support.If you have requirements for other different models and capacities, please contact us and we can customize them for you.