A battery control system and method for a battery of a vehicle includes a battery for supplying electrical power to a plurality of loads of the vehicle and a controller that receives a battery signal representative of a condition of the battery, an ignition key signal representative of a state of an ignition key of the vehicle, and an engine signal representative of a state of an engine in the vehicle. The controller selectively electrically connects/disconnects the plurality of loads of the vehicle and the battery based on at least one of the battery signal, the ignition key signal, and the engine signal. An interface provides information on at least one of the battery and a connection state between the plurality of loads and the battery.