The Mercedes-Benz E220 CDI typically uses a 12V AGM (Absorbent Glass Mat) or Lead Acid battery compatible with models such as FMLO-MLDIN66, FML0-MLDIN65LH, and FMT0-MTREDDIN100. These battery types are designed to deliver reliable power, support start/stop technology, and provide long-lasting performance suitable for the car’s advanced electronics. Always confirm compatibility with the vehicle’s manual before purchase.