Lithium Electric Bike Battery 48V 15Ah with Charger, PCB and BMS, 30A Model: KY-4815A Approvals: RoHS, UN38.3, FCC, ... to make sure batteries in high and full capacity2.Protection: Dual IC chips, that can anti-short circuit, anti-over charger, anti-over ... rechargeable Lithium Electric Bike Battery 48V 15Ah with Charger, PCB and BMS, 30A