Description
The part number A0009829508 is a genuine Mercedes‑Benz auxiliary battery (AGM type) designed for vehicles that employ a secondary battery to support advanced electronics, stop‑start functions, and battery‑management systems.
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According to a product listing, this battery is rated at 12 V, 10 Ah, with a cold cranking current of 170 A, suited for auxiliary battery applications. DriveRight Supplies KE
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Auxiliary (or “aux”) batteries are separate from the main starter battery and are used in modern vehicles to support high‑demand electrical loads (e.g., infotainment, sensors, stop‑start, electric actuators) even when the engine is off or during engine cranking.
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Being an OEM Mercedes‑Benz battery, it ensures correct terminal layout, physical dimension, mounting interface, and electrical specification as required by the vehicle’s original equipment.
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For listing or stocking: highlight that this battery is for auxiliary support, not the main starter battery, and specify capacity/rating (12 V/10 Ah AGM) and application type (stop‑start / auxiliary supply) to avoid confusion.

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