2003-2007 Honda Accord Battery Size
4-cyl 2.4L models use Group 51R; V6 3.0L models use Group 24F. Battery fit is the same for every year in this generation — always confirm against the installed battery label, owner's manual, or a VIN-based retailer lookup before ordering.
The seventh-generation Accord splits cleanly by engine. The 2.4L four-cylinder takes a Group 51R rated between 435 and 500 CCA, in either flooded or AGM construction. The 3.0L V6 needs a Group 24F instead, a physically larger case carrying roughly 700 CCA. The detail that catches people on the four-cylinder cars: Group 51 and Group 51R put their terminals on opposite sides, and the two are not interchangeable. A plain 51 can look right sitting in the tray while its cables land on the wrong posts. Confirm the R before paying for anything.
| Engine / trim | Group size | CCA | Type | Notes | Shop |
|---|---|---|---|---|---|
| 4-cyl 2.4L | 51R | 435-500 | Flooded / AGM | Most 7th-gen four-cylinder Accords use a reversed-terminal Group 51R battery. | Shop ▸ |
| V6 3.0L | 24F | ~700 | Flooded / AGM | V6 cars usually use the larger Group 24F case; confirm terminal layout before buying. | Shop ▸ |
What to check before buying
- Group size: this controls physical fit, hold-down, and terminal position.
- Terminal direction: 51R has reversed terminals; 51 and 51R are not interchangeable.
- CCA: match or exceed the factory rating in the same group size.
- Chemistry: keep AGM if your Accord came with AGM, especially on hybrid or start/stop trims.