Key words: Battery charger |Lead acid battery charger | Motorcycle battery charger Application scope:CM-0XXX series charger is designed for battery charging and the design of the three stage type charger, the shell with high strength anti static plastic material, solid and beautiful appearance. Circuit using single chip control, fool type operation, silicon controlled rectifier, stable and durable performance, the panel has a charging indicator for each phase, there are four sections of capacity instructions to allow users to clearly know the charging process. This charger should be a suitable for high-end battery charger.