Yes. Any lithium battery BMS is possible to fail. The suppliers of BMS must have anticipated these situations and planned ways to deal with them.
- If our lithium battery BMS fails, it will go into “battery low” protection off mode. It stops the battery from discharging.
- The worst-case scenario is for the BMS to malfunction and allow the battery to overcharge. Can cause cells to rupture and start a fire. That’s why a lot of battery packs also have a thermal fuse that shuts it off if the BMS fails to protect it first.
MORE: How to diagnose the reason why the battery BMS is disconnected for no reason before charging many times?