48V 15AH 30A Battery apply for: 48V 0-1000W Motor. 52V 20 Ah 40A BMS. 48V 15 Ah 30A BMS. 48V 18AH 30A Battery apply for: 48V 0-1000W Motor. 48V 18 Ah 30A BMS. In order to protect battey better. Reverse charging protection Battery Specification:(Built-in genuine A+ grade lithinum cell).