Which aspect is NOT monitored by the Battery Management System (BMS)?

• A. State of charge
• B. Usage of interior electronics
• C. Temperature
• D. Cell voltages

Answer: (B)

The BMS focuses on protecting and managing the battery pack by watching conditions that affect cell safety and energy delivery. It tracks the state of charge to know how much energy remains and to prevent over-discharge or over-charge. It monitors temperature to detect overheating and keep operating conditions within safe limits. It also checks cell voltages to identify imbalances or abnormal cells that could threaten the pack.

It does not monitor how interior electronics are used. That’s handled by the vehicle’s energy management and power controllers, which manage loads from cabin devices rather than the battery’s safety and health signals. So the aspect not monitored by the BMS is the usage of interior electronics.