The 2009 Honda Fit Sport uses a standard 12-volt automotive battery, and the common replacement size for most North American examples is Group Size 51R. This means you’ll typically look for a 12V battery labeled Group 51R when replacing the original unit.
In more detail, the "size" refers to the battery's group code, which matters for fitment, terminal orientation, and cold-cranking amps. The Fit's original equipment battery is a compact, flooded lead-acid unit designed to fit under the hood with the correct positive/negative cable layout. If you swap brands, make sure the replacement matches the group size and fits the battery tray and terminal positions.
Confirming the correct battery size for your car
To ensure you install the right battery when replacing, use these verification steps:
- Check the existing battery's label for the group size (for example, "Group Size 51R").
- Consult the owner's manual or the Honda service data for the 2009 Fit Sport to confirm the recommended group size.
- Visit a parts retailer or Honda dealer and provide your VIN to get the exact replacement battery that fits your specific build date and market.
- Compare the terminal layout and battery dimensions with the replacement battery to ensure compatibility with cable lengths and tray space.
- If in doubt, ask for a 12V battery with Group Size 51R (or the dealer-approved equivalent) and verify fitment before purchase.
Most 2009 Fit Sport models that require a straightforward replacement will use Group 51R. Always verify with your specific vehicle to avoid issues with fitment or wiring.
Notes on market variations
Battery sizing can differ by region and production date. While Group 51R is common for many 2009 Fit models in North America, some markets or late-production runs could use different group sizes. Checking the battery label, owner's manual, or a VIN-specific parts lookup remains the most reliable method to confirm the correct size.
Summary
For a 2009 Honda Fit Sport, expect a 12-volt battery, typically in Group Size 51R. To replace, verify the exact group size on the battery label or via a dealer parts lookup, and ensure the replacement’s physical fitment, terminal layout, and capacity match. If you cannot locate Group 51R, contact a dealer or reputable parts supplier with your VIN to obtain the correct spec for your car.