Battery Management System, Lithium Battery Pack, LiFePO4 Battery Pack manufacturer / supplier in China, offering Lws 4s 20A 30A Short-Circuit Protection Battery Management System 4s BMS, Lws BMS 4s-20s 100A 120A LiFePO4 Charge/Discharge Protection Board BMS, Lws Lithium Ion Battery BMS 4s 50A Protection Board 4s BMS with RS485 Bt and so on.