This 48V 15Ah (720Wh) Lithium-Ion battery pack with genuine Samsung/LG cells offers the removable waterproof battery supports fast charging. It can be charged to about 80% in 4 hours and fully charged in 8 hours, and the range can be up to 40+ miles per charge. Whether you're on a leisurely ride or heading out for a longer journey, you can depend on the reliable performance of this battery pack. With its impressive range and powerful charge, it's the perfect choice for any electric bike.