Car Tire Size / Car battery size / Group 48
Group 48 battery size
A group 48 car battery is at most 10.94 inches long, 6.89 wide and 7.48 tall (278 x 175 x 190 mm), with top posts. In Europe and on many imports the same box is called H6.
- Length
- 10.94 in (278 mm)
- Width
- 6.89 in (175 mm)
- Height
- 7.48 in (190 mm)
- Terminals
- top posts
- Also sold as
- H6
Close in size
Groups within 10 mm (0.4 in) on every side:
- Group 98R: 11.14 x 6.89 x 7.48 in, different terminal layout (BCI figure 15, not 24).
Before you buy a group 48 battery
- Read the group number on the label of the battery in your car, or in the owner's manual: it should say 48.
- 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 48 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 48 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; Vatrer Power, "Battery Group Size Chart: BCI Dimensions and Fit Guide" (vatrerpower.com), updated August 4, 2026; Power Tool Insider, "Car Battery Group Size Chart" (powertoolsinsider.com), updated October 7, 2026.