Cordless battery-powered drill, toys and so on. especially in the charging of devices like mp4, dvd divx, models used in model applications can use in lithium polymer battery charge balancing of the transistor featuring lithium-ion, lithium-polymer battery charging circuit... Electronics Projects, BD244 Transistor Li-ion Lipo Battery Charge Circyit Balancing "battery charger circuit, power electronic projects, simple circuit projects, " Date 2019/08/02