1.5T models use Group H5 (47); 2.0T / Hybrid models use Group H6 (48). Battery fit is the same for every year in this generation — always confirm against the
installed battery label, owner's manual, or a VIN-based retailer lookup before ordering.
Group numbers reset completely at 2018. The tenth-generation 1.5T takes a Group H5, cross-referenced as Group 47, rated near 650 CCA, while the 2.0T, the Touring, and the hybrid all move up to an H6/48 at roughly 760 CCA. Every one of them is AGM, and that is the detail to hold onto: trims with start/stop must stay on AGM when the battery comes out. A flooded unit in the same case size will bolt in without complaint, but it was never built for that duty. On this generation, the chemistry is part of the spec, not an upgrade.
2018-2022 Honda Accord battery fitment (10th gen)
Engine / trim
Group size
CCA
Type
Notes
Shop
1.5T
H5 (47)
~650
AGM
Many 10th-gen 1.5T cars use the European H5/47 size; start/stop trims should stay AGM.
What size battery does a 2018-2022 Honda Accord take?
Across 2018-2022 (10th gen), fitment is set by engine, not by year — every model year in this range shares the same battery. 1.5T models use Group H5 (47); 2.0T / Hybrid models use Group H6 (48). Confirm the exact group size on the label of your current battery or with a VIN-based retailer lookup before buying.
How many CCA does a 2018-2022 Honda Accord battery need?
Match or exceed the factory rating. For this generation, common fitments are H5 (47) at ~650 CCA and H6 (48) at ~760 CCA. Higher CCA in the same group size is fine; the wrong physical group size is not.
Should a 2018-2022 Honda Accord use AGM or flooded?
Use the chemistry your car was designed for. Older gas Accords can often run flooded or AGM in the correct group size, while newer start/stop, Touring, and hybrid trims should stay AGM if they came with AGM.
Is a specific model year — like a single 2018 car — different?
No. Every 2018-2022 Accord in this generation uses the same group size and CCA for a given engine, which is why one page covers the whole range instead of a near-identical page per year.