Group 90 battery size

Same box, other group numbers

• Group 42: 9.53 x 6.89 x 6.89 in, different terminal layout (BCI figure 15, not 24).
• Group 96R: 9.53 x 6.89 x 6.89 in, different terminal layout (BCI figure 15, not 24).

Same box does not mean same battery: if the terminals are on the other side, the cables may not reach.

Before you buy a group 90 battery

• Read the group number on the label of the battery in your car, or in the owner's manual: it should say 90.
• 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.
• Measure your battery tray and the room above it, then compare with the size printed for the exact battery you pick, not only with the group number.
• Group 90 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.

Good to know about group 90

• Group 90 is the size that European sizing calls T5; East Penn and PartSource also write LB2.^1,2,3,4
• Spec sheets list the positive terminal of a group 90 battery on the right.^1,3,4,5,6
• Group 90 is as long and wide as a group 47 (H5), 242 x 175 mm, but lower: 175 mm high against 190 mm.^1,2
• Retailers list group 90 (T5) for some Ford models, such as certain years of the Ford Edge.^7,8
• The T5 label and the 242 x 175 x 175 mm box are shared with group 42.^1,2
• Listings for group 90 nearly agree on length: O'Reilly (Super Start) and Batteries Plus list 9 9/16 in (242 mm), the BCI figure, while Interstate lists 9 1/2 in.^1,4,5,7

How we checked this page

Checked on October 16, 2026. We kept a fact only when two independent sources agree, and each one is numbered to its sources below. We never write a price: the listings come straight from eBay and show what sellers ask. This page was written with an AI assistant and checked against the sources below.