GEB can provide several different lithium battery packs for electric bikes, electric wheelchairs and etc. We have many regular Aluminum cases and plastic cases to fit different bicycles. The most popular ones are named A-model, silver fish model, back carrier model and small frog type. They are with BMS, standard chargers, keys, and other accessories. These battery packs can be assembled with LiFePO4 battery cells and also LiMnO4, two kinds of chemical materials. The LiFePO4 battery pack got the advantage of longer cycle life and safety. The Mn Type is with more light weight and cheaper price.