ENGWE M20 Electric Mountain Bicycle 13AH 1000W Fat Tire Ebike UL 2849 Certified

13Ah Battery Version: 48V13Ah Lithium-Ion Battery 1. 1x 13Ah Battery Version: 48V13Ah Lithium-Ion Battery. M20 is made of lightweight aluminum alloy, the whole bike is lighter, 40% lighter than bikes using high carbon steel, making it easier for you to ride.