? Battery Output? 52V 20AH ebike battery, LG Brand cells, suitable for 48v/52v 1500w 1000w 750w 500w 250w electric bike motors, 58.8V 3A charger. Max constant discharge current is 40A. ?? BMS Protection Board? High quality electric cell and equipped with a 40A BMS protective plate, prevent from over charge, over discharge, over current and short circuit and ensure the long life expectancy. The product comes with a pair of XT60 connectors. Comes with a charger, when charging, please open the switch and charge for at least 8 hours, when the red light of charger turns green, it means fully charged. We hope provide not only good products but also good services. WHAT YOU WILL WANT TO KNOW BEFORE ORDER. No reason to return. We will provide return label for free. Any quality problem we will provide free return label in 2 month. Built with high quality BMS Board for Safety protection. Could use on other device. Prevents the battery from being stolen. Can avoid wasting power. Inform you charge your battery on time. Our battery can fit most motor kit, for example: Bafang, Voilamart, Tongsheng, but exclude these four. Max Continuous Charge Current. Max Constant Discharge Current. CC/CV(Constant Current;Constant Voltage). 80% after 1000 Cycles.