The 2009 Mitsubishi Galant uses a standard 12-volt automotive battery. In most markets the factory-installed battery is Group Size 35, but exact sizing can vary by trim and region. Verify your current battery label or the owner's manual to confirm the correct size and rating before purchasing a replacement.
Battery type and size
The Galant's electrical system is designed for a conventional 12V lead-acid battery. The most common size for 2009 Galants in North America is Group 35 (also known as H5 in some catalogs). Some regional models may use Group 24F instead. Check the battery label or service documentation for the exact specification.
Below are the two most common group sizes you may encounter on a 2009 Galant, along with what to expect from each.
- Group Size 35: A standard mid-size car battery, typically 600-750 CCA, fits most 2009 Galants. Usually maintenance-free with a capacity around 70-75 Ah.
- Group Size 24F: A slightly different footprint used on some regional configurations, offering similar 12V power and comparable CCA. Always verify fitment before purchasing.
When shopping, confirm the exact group size printed on the existing battery or in the owner's manual to ensure correct fit and electrical performance.
How to confirm the correct battery
To ensure you purchase the right battery for your specific Galant model, follow these verification steps:
- Inspect the current battery label for the group size (often printed as "Group 35" or "H6").
- Check the owner's manual or the Mitsubishi service documentation for the recommended group size and CCA rating.
- Measure the battery dimensions (length, width, height) and compare with standard group size specs from a trusted parts catalog.
- Use the vehicle identification number (VIN) at a dealership or parts retailer to pull the exact OEM specification.
- When replacing, choose a battery with equal or higher CCA and RC values and the correct group size.
Always handle with safety: disconnect the negative terminal first, wear eye protection, and dispose of the old battery properly.
Choosing a replacement
Key considerations when selecting a replacement battery for a 2009 Galant include the battery type, fit, performance and warranty.
- Type: You can choose between a conventional flooded lead-acid or an AGM (absorbent glass mat) battery for better vibration resistance and longer life, depending on climate and usage.
- Group size: Ensure the replacement fits the battery tray and terminal layout (typically Group 35 or 24F for this model).
- CCA rating: OEM guidance typically falls around 600-750 CCA; pick equal or higher for cold climates.
- RC rating: Reserve capacity around 90-110 minutes or more is desirable for larger electrical loads or frequent use of accessories without the engine running.
- Warranty: Look for at least 2-3 years of warranty with good exchange terms.
In practice, a high-quality 12V Group 35 battery with about 650-750 CCA is a reliable replacement for most 2009 Galants in common driving conditions.
Summary
The 2009 Mitsubishi Galant generally uses a 12-volt lead-acid battery, with Group Size 35 as the most common specification. Some regional models may use Group 24F. Always verify the exact group size and CCA rating from your current battery or the owner's manual before buying a replacement. When in doubt, consult a Mitsubishi dealer or a trusted auto parts retailer using your VIN to confirm the precise OEM specification. As a rule of thumb, a 12V Group 35 battery with roughly 650-750 CCA is a solid choice for this model.