Battery Management System

The BMS protects the battery pack by continuously monitoring cell voltage, temperature, and current flow, balancing charge distribution across cells, and preventing dangerous conditions like overcharge, deep discharge, or thermal runaway.

The battery management system (BMS) is a sophisticated computer that constantly monitors each cell or module in a hybrid or electric vehicle's battery pack, managing temperature, voltage, and current to keep the battery safe and efficient. It prevents overcharging, over-discharging, and overheating, and communicates battery status to the vehicle's main computer. When a BMS fails, the vehicle may disable the battery or go into a reduced-power mode to protect both the battery and the driver.

⚠️ Owners Often Notice

If the Battery Management System is starting to fail, these are the signs owners most commonly report before it gets worse:

Related Services

Services commonly performed on or around this part.