Lithium Electric Bike Battery 48V 15Ah with Charger, PCB and BMS, 30A Model: KY-4815A Approvals: RoHS, UN38.3, FCC, ... .6V7Standard charge2A CC(constant current)charge to 54.6V, then CV(constant voltage 54.6V)charge till charge current decline to ≤0 ... cycle, No memory, environment friendly 48V 15Ah Lithium Electric Bike Battery with Charger, PCB and BMS, 30A