Why BMS (battery management system) is required? All Questions › Category: Electric Vehicle › Why BMS (battery management system) is required? 1 Vote Up Vote Down chetan shidling asked 4 years ago Options: To provide protection For cell balancing Both a and b None of the above 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago It is used to provide protection and for cell balancing.