Car Tire Size / Car battery size / Group 65
Group 65 battery size
A group 65 car battery is at most 12.05 inches long, 7.56 wide and 7.56 tall (306 x 192 x 192 mm), with top posts.
- Length
- 12.05 in (306 mm)
- Width
- 7.56 in (192 mm)
- Height
- 7.56 in (192 mm)
- Terminals
- top posts
Close in size
No other group in the BCI table comes within 10 mm (0.4 in) of group 65 on all three sides: look for group 65 itself.
Before you buy a group 65 battery
- Read the group number on the label of the battery in your car, or in the owner's manual: it should say 65.
- A group with an "R" after the number has its terminals reversed: do not swap one for the other without checking where your cables reach.
- Choose cold cranking amps (CCA) at least as high as the original, especially for cold winters.
- Group 65 has top posts: the new battery must match, and the hold-down must fit the box.
- Most stores take the old battery back for recycling, often against a core charge.
Group 65 batteries listed on eBay
Dimensions are the BCI maximums for the case, terminals excluded. Sources: Battery Council International, "BCI Group Numbers, Dimensional Specifications and Ratings" (batterycouncil.org), read October 15, 2026; Power Tool Insider, "Car Battery Group Size Chart" (powertoolsinsider.com), updated October 7, 2026.