Description

The Mercedes-Benz Support Battery, part number A 000 982 51 31, is a critical component of the vehicle’s dual battery electrical system. It prevents excessive drain on the main starter battery when multiple accessories are used simultaneously (e.g., air conditioning, navigation, radio), ensuring you always have enough power to start the engine. This part is generally an Absorbent Glass Mat (AGM) battery, known for better performance and durability in modern vehicles. It is typically located in the rear of the vehicle or within the secondary on-board electrical system.

Additional information