aventon level ebike battery pack 48v 10ah 13ah 14ah 250w 500w 750w bafang motor ejoe jade onyx frame batteries

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 we can customized battery according to your request. please tell us information like, voltage, capacity, size, motor power or more. management system is the the circuit board that protect your battery pack and make sure it is safely. faster delivery eu usa warehouse.syi