Hyundai Sonata 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 Hyundai Sonata 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 Hyundai Sonata take?

BCI group 48 (H6) AGM. 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 Hyundai Sonata 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 Hyundai Sonata?

Engine bay, driver side.

Does a Hyundai Sonata need the battery registered after replacement?

Start-stop is standard across the DN8 lineup, requiring an AGM battery; Group 48 (H6) is the most commonly reported OEM-equivalent fit. Confirm against your VIN before ordering.