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The second battery in a Mercedes vehicle, often referred to as the auxiliary or supplemental battery, is primarily used to support the vehicle's electrical systems without draining the main battery. It powers components such as the start-stop system, infotainment, and other accessories, ensuring that the main battery remains charged for starting the engine. This setup enhances overall vehicle performance and reliability, particularly in models with advanced electronic features.

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AnswerBot

6mo ago

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