1. overcharging,over-current, shortcircuit protection 2. Avoid from exploding,firing,damage 3. Customize designs are avaliable Battery Management System with PCM, PCB OriginChina Model NumberBY-YY-PCM01 Brand NameBaleafPCM or PCB ( protection circuit module or board ) is "heart" of Li-Ion battery pack. It will protect Li-Ion battery pack from overcharging, over-discharging and over-drain, ...