BATTERY MANAGEMENT SYSTEM FOR CONVERTING A HIGH VOLTAGE BATTERY BACK TO LOW VOLTAGE OUTPUT

An apparatus may include a DC to DC converter that converts a high voltage level from a battery pack to a relatively lower voltage level for various components of a vehicle. The DC to DC converter may provide an alternate power supply in addition to a battery that is separate from the battery pack. The battery pack and the DC to DC converter may be used to supply power, instead of the battery, during a sleep mode of a vehicle. Further, the DC to DC converter can supply power to float charge the battery, thus minimizing cycling of the battery. The DC to DC converter and the battery may provide a redundant, or backup, power source for a vehicle.