Long distance 250W 500W rear rack battery pack 36V 13Ah 15Ah 17.5Ah 20Ah 25Ah 30Ah 35Ah electric bike batteries with 42V Charger

Most of our battery packs are made up of authentic Grade A 18650 battery cells from Korea or Japan. We use Samsung, Panasonic or LG brand cells and and some use our brand cells. In every product link description, you can check which cells are built in the battery pack you are intereted Battery management system is the the circuit board that protect your battery pack and make sure it is safely. We can customized battery according to your request. Please tell us information like, voltage, capacity, size, motor power or more.