The 2009 Honda Civic uses a standard 12‑volt lead‑acid battery. The most common group size for this year is Group 51R, with Group 35 appearing in some trims or regional variants. Always verify the exact size by checking the current battery label or the owner's manual.
Details can vary by market and trim, so it’s important to confirm the correct fit for your specific Civic. If you’re replacing the battery, match the group size, as well as the CCA and reserve capacity, to what the manual recommends and what your current battery specifies.
Common battery group sizes for the 2009 Civic
Below are the two most frequently encountered options for 2009 Civics, noting that size can depend onRegion and trim:
- Group 51R — widely used on many North American Civics; compact size with standard 12V capacity.
- Group 35 — used on some trims or regional models and available as an aftermarket replacement.
When replacing, always verify the exact group size and terminal layout on the battery label or in the owner's manual to ensure proper fit and compatibility.
How to verify the exact fit for your vehicle
To confirm the precise size for your car, you can use a few straightforward checks before purchasing a replacement:
- Check the owner's manual or Honda parts catalog for the recommended group size for your year and market.
- Inspect the label on your current battery to read the group size (e.g., 51R or 35) and the required CCA and AH ratings.
- Measure the battery tray dimensions and compare the replacement battery’s dimensions to ensure it will fit in the tray and align with the terminals.
- If in doubt, provide your VIN to a dealership or auto parts store to confirm the correct group size and compatible replacements.
Following these steps helps prevent fit issues and ensures the new battery delivers the expected cold-cranking performance and endurance.
Notes for different climates and trims
In colder climates or for higher-demand setups, some owners may opt for a battery with higher cold-cranking amps within the acceptable size. Always stay within the recommended group size and verify terminal positions to avoid clearance or wiring issues.
Summary
The 2009 Honda Civic generally uses a 12-volt lead-acid battery, with Group 51R as the most common size and Group 35 as an alternative for certain trims or markets. Always confirm the exact fit by checking the battery label, the owner's manual, or a trusted parts supplier using your VIN. Matching the group size, terminal layout, and electrical ratings ensures proper fit and reliable starting performance.
What size battery goes in a 2009 Honda Civic?
DieHard Gold – Battery : 51R Group Size, 500 CCA, 625 CA, 85 Minute Reserve Capacity, Maximum Starting Power (Part No. 51R-2)
Are 51 and 51R the same battery?
This dimensional variation optimizes weight and performance for specific applications, such as lower cranking amps and reserve capacity. Furthermore, these batteries feature distinct terminal polarities: Group 51 places its positive terminal on the left, while Group 51R aligns it on the right.
What kind of car battery for a Honda Civic?
Honda Civics take a variety of batteries based on their year and sub model. Common battery sizes for Honda Civics are BCI Group Sizes 51R and 47 and Duracell Ultra makes several levels of battery for your Honda Civic like the Duracell Ultra Gold Flooded battery and the Duracell Ultra Platinum AGM.
What is the battery size of a Honda Civic?
A 12V lead-acid battery is the most common type used in Honda Civic vehicles to start the engine and power electrical systems. It is reliable and cost-effective, making it ideal for petrol and diesel Honda Civic cars with standard power needs.