Abstract: A dual battery system includes a starter battery and a battery of the vehicle electric system, a starter and electric consumers that are divided up into start-relevant consumers and consumers of the vehicle electric system. At least one starter switch is interposed between the starter and the starter battery. A first, electronically fully locking switch element is interposed between the starter battery and the start-relevant consumers and a second electrically fully locking switch element is interposed between the battery of the vehicle electric system and the start-relevant consumers. An element is interposed between the starter battery and the battery of the vehicle electric system that prevents the flow of current from the starter battery to the battery of the vehicle electric system and the consumers of the vehicle electric system.

Abstract: A two-battery system includes a starter, a generator, a starter battery, a vehicle electrical system battery, vehicle electrical system-specific consumers and consumers relevant to starting. A first electronic pole binder is arranged between the starter and the starter battery, and a second pole binder is arranged between the starter and the vehicle electrical system battery. A circuit breaker controllable by a signal that determines the excitation of the generator is arranged between the vehicle electrical system battery and the starter battery. The vehicle electrical system-specific consumers are permanently associated with the vehicle electrical system battery, and the consumers relevant to starting are permanently associated with the starter battery.

Abstract: A battery system includes a generator, a starter and at least one battery, whereby the starter is connected to the battery via a starter line. An electronic pole terminal is arranged between the starter and the battery, and the starter line may be switched in a de-energized manner via the electronic pole terminal.