BMW 3 Series G20 Battery Specifications
Battery specifications by year for 2021-2025 BMW 3 Series G20
Some specifications are estimated based on common fitments. Always verify with your vehicle or a parts professional.
Battery Specs by Generation
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Battery Tips for BMW 3 Series G20
- BCI Group - Make sure the group size matches your battery tray dimensions
- CCA (Cold Cranking Amps) - Meet or exceed the OEM specification; higher CCA helps in cold weather
- AGM vs Flooded - AGM batteries cost more but last longer; required for start-stop systems
- Terminal Position - "F" or "R" suffix indicates reversed terminal orientation
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