Requirement: 1.3.1.7 Must have a Battery Management System (BMS) installed to control and protect the battery against risk of fire. The BMS must provide cell balancing during off-track charging and protect against overcharge,( and for e-mobility vehicles) over discharge, over-current and over temperature. For non e-mobility vehicles, the accessory battery BMS system cell balancing and overcharge protection may be contained in the off-board charger.