Key words: Battery charger |Lead acid battery charger | Motorcycle battery charger The ECM-XX series is development by Chaosisi technologies are widely used in electric vehicle battery charging and similar charger. It uses high power switching power supply technology, combined with the Xiangduilun lead acid batteries three stage charging principle. After many customers used domestic and abroad to verify that it has the characteristics of fast charge full battery without any damage. It is mature and ideal battery charging equipment for lead acid batteries.