Jeep Grand Cherokee Battery Size (BCI Group and CCA)

Each row links to the full specification for that generation, including trim-by-trim breakdowns and the part numbers. Where engines within a generation differ, that page separates them.

The battery on a Jeep Grand Cherokee is set by its generation, not its model year, so each generation has one page carrying the complete figures, part numbers and fitment notes for every year it covers.

What size battery does a Jeep Grand Cherokee take?

BCI group H6/Group 48 AGM (main, under the driver's seat) + Group 14 auxiliary ESS battery (under the passenger seat). Group size is a physical dimension and terminal-position standard, so a battery from a different group may not clamp down or may put the terminals on the wrong side.

Does the Jeep Grand Cherokee need an AGM battery?

Yes. This vehicle requires AGM, not flooded. A flooded battery in a start-stop system is cycled far harder than it is designed for and fails early.

Where is the battery on a Jeep Grand Cherokee?

Cabin, main battery under the front driver's seat, small auxiliary Engine Stop-Start (ESS) battery under the front passenger seat; both require moving the seat and a floor panel/cover, not accessible from under the hood.

Does a Jeep Grand Cherokee need the battery registered after replacement?

The WL moved the main battery from the passenger side (WK2) to the driver side and added a second, smaller AGM battery dedicated to the auto stop-start system. Two independently-confirming owner/forum sources agree on this split layout.