Our battery pack only use grade A cell for battery, safest packing process, never use cheap / false cells with false capacity / low price to attract buyers. Price = quality = customer’s service. Ebike battery charging cycle exceeds 800 times. High-quality electric cells and a built-in BMS protection board prevent over-charge, over-discharge, over-current and short-circuit, ensuring long service life. Our battery fits most motor kits. For example: Bafang, Voilamart, CSC, Tongsheng, Ebikling. But exclude these four: Bosch, SHIMANO, Yamaha, Panasonic. If you are unsure if it is suitable for your device, please contact me before purchasing to inquire, thank you. 48V 20AH E-bike Lithium Battery For 02000W Electric Bike Motor with Rear Rack. Practical Functions?? Our ebike battery with battery base fits most bicycle? Lock with keys securely locks the battery to prevent the battery from being stolen? With Tail Light. LED power indicator informs you to charge the battery on time. IP65 waterproof material hard battery case, insulation, anti-corrosion and wear resistance. BMS Protection Board? High quality imported electric cell and equipped with a 30A/50A BMS protective plate, prevent over charge, over discharge, over current and short circuit and ensure the long life expectancy. Avoid extreme high and low temperatures when using or storing lithium-ion batteries; Pay attention to vibration and avoid falling and collision; Avoid excessive charging and discharging; Use the original battery charger; If long-term storage, discharge the lithium-ion battery to about 40% and leave it Store in a cool and dry place. CC/CV (Constant Current; Constant Voltage). 80% after 1000 Cycles. Battery cell:A grade 2600mAh Cell. Maximum continuous charge current: 30A/ 50A (BMS). 30A BMS-for 48V 01000W Motor. 50A BMS-for 48V 02000W Motor. Peak Discharge Current: 60A/ 120W. Charge Cut-off Voltage: 54.6V. Discharge Cut-off Voltage:36.439V. Discharge connector :Anderson/XT60 Connector. Battery weight:6.5KG. 1Ebike Battery with Discharge Plug& Keys. 1Rear Rack with parts. The battery must be FULLY charged before first use. The battery is stored in a cool and dry place. Do not Separation, extrusion, and impact. Do not put battery into water and fire. Keep away from children. Warhouse: United Kingdom/ Germany. We offer 30-day return&replacement. Thank you so much. Our working time:Monday- Friday, 9:00 to 18:00.