? ? OEM lithium battery packs, mainly based on customer requirements, such as voltage, discharge current, battery requirements, protection requirements, housing and so on. Regarding this lithium battery pack, we are currently doing more power battery packs, with a maximum voltage of 36V, a capacity of 20AH, and a discharge current of more than 50A. Mainly used in electric bicycles, battery skateboards, electric balance vehicles, electric iron machines, electric clamps, etc.