A Battery Management System (BMS) is designed to protect a battery pack by preventing over-charging, over-discharging, and over-current conditions. Properly wired, the BMS should interrupt the discharge path when the battery reaches a critically low voltage. However, scenarios can occur where the battery continues to discharge even with a BMS installed, indicating a wiring problem, a BMS malfunction, or an incorrect configuration.
Correct BMS wiring is critical for the longevity and safety of battery packs, particularly in high-power applications such as electric vehicles and energy storage systems. A BMS that fails to prevent over-discharge can lead to irreversible battery damage, reducing its capacity and lifespan. Historically, the absence of robust BMS systems in early battery applications contributed to shortened battery lifecycles and increased safety risks.