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Fitment & group size

Honda Accord Battery Size & Group Size by Year

Most Honda Accords take a Group 51R battery — that covers nearly all four-cylinder models from 2003–2017. V6 Accords usually take Group 24F, and 2018-and-newer turbo models use Group H5 (47) or H6 (48). Your exact size depends on year and engine, so always confirm with the battery label or owner's manual before buying.

Battery finder

Year
2008–2012
Engine
4-cyl 2.4L
✓ Confirmed fit
8th gen
Group
51R
CCA
590
Type
Flooded
DeadWeakGood
Use this chart as a starting point, not the final word. Honda changed battery sizes across trims, engines (4-cyl vs V6), and hybrid vs gas. The only 100%-reliable sources are the label on your current battery, your owner's manual, or a retailer fitment lookup by VIN. Buying the wrong group size means it won't fit the tray or hold-down — and the terminals may end up on the wrong side.

Most common, in plain terms: if you drive a 2003–2017 four-cylinder Accord, you almost certainly need a 51R. If it’s a V6 of that era, you likely need a 24F. From 2018 on, you’re into the smaller European H5/H6 (47/48) sizes.

How to confirm your exact battery size (3 ways, most reliable first)

  1. Read the old battery. The group size is printed on the top or side label (e.g. “51R”, “24F”, “H5”). This is the single most reliable source — it’s what’s physically in your car right now.
  2. Owner’s manual. The maintenance/specifications section lists the factory battery group and CCA.
  3. Retailer fitment lookup. AutoZone, Advance Auto, or Walmart let you enter your year + engine (or VIN) and return the exact fit. Use this to double-check before you buy.

What “group size” actually means

Group size is a Battery Council International (BCI) standard. It defines the battery’s length, width, height, terminal positions, and hold-down style — not its power. Two batteries with the same group size (e.g. 51R) will physically fit the same tray and connect the same way. The trailing “R” means reversed terminals (positive/negative swapped vs the non-R version) — a 51 and a 51R are not interchangeable.

Pick the right power (CCA) and type

  • CCA (cold cranking amps): match or exceed your factory rating. Higher CCA never hurts; lower can mean hard starts in winter. The factory CCA is on the old battery’s label.
  • Flooded vs AGM: OEM on most gas Accords is a standard flooded battery. AGM costs more but lasts longer, handles deep cycling, and is the right choice for hybrids and start/stop systems. If your Accord came with AGM, replace with AGM.
  • Lifespan: a typical Accord battery lasts 3–5 years. Heat shortens it more than cold.

OEM vs aftermarket — what to buy

You do not have to buy the Honda dealer battery. As long as the group size matches and the CCA is equal or higher, a quality aftermarket battery fits and performs the same:

  • Budget / wide availability: EverStart (Walmart), Duracell.
  • Mid / strong warranty: ACDelco, Bosch, DieHard.
  • Premium / AGM: Optima, Odyssey, DieHard Platinum AGM.

Expect roughly $120–$250 for the battery itself (size and type dependent), or $230–$251 installed at a shop (RepairPal average). Swapping it yourself on most Accords is a 15-minute job with a 10mm wrench — see the battery replacement how-to.

Here’s the full group-size chart by generation — find your year, then shop that size:

Accord Energy fitment chart
Generation Years 4-cyl V6 Notes Shop
6th gen 1998–2002 35 78 4-cyl 2.3L / V6 3.0L Shop ▸
7th gen 2003–2007 51R 24F V6 3.0L often 24F Shop ▸
8th gen 2008–2012 51R 24F V6 3.5L (2008–09) → 24F; some late 4-cyl → 35 Shop ▸
9th gen 2013–2017 51R 24F some trims → 51 Shop ▸
10th gen 2018–2022 H5 (47) — 2.0T / some → H6 (48); Hybrid → 51 / H6 Shop ▸
11th gen 2023–present H6 (48) — DIN/H-series sizing; hybrid 12V aux usually AGM — verify on the label Shop ▸

Frequently asked questions

What size battery does a Honda Accord take?
Most four-cylinder Accords from 2003–2017 use a Group 51R battery. V6 models of that era usually take Group 24F, and 2018-and-newer turbo Accords use Group H5 (47) or H6 (48). Confirm the exact size on your battery's label or in the owner's manual before buying.
Is my Accord battery a 51R or a 24F?
It depends on the engine. Four-cylinder Accords (2003–2017) almost always use 51R; V6 Accords use 24F. The quickest way to be sure is to read the group size printed on the label of the battery currently in your car — that's exactly what fits.
Can I put a bigger battery in my Honda Accord?
Only if the group size still fits the tray and hold-down and the terminals are in the same position. You can safely choose a battery with higher CCA in the correct group size, but a physically larger group that doesn't secure properly is unsafe. Stick to your factory group size.
How much is a Honda Accord battery?
Expect about $120–$250 for the battery itself depending on group size and whether it's AGM, or roughly $230–$251 installed at a shop (RepairPal average). Replacing it yourself takes about 15 minutes with a 10mm wrench on most Accords.
How long does a Honda Accord battery last?
Typically 3–5 years. Heat shortens battery life more than cold, so Accords in hot climates often need replacement sooner. If yours is slow to crank, is over 4 years old, or the battery/charging light is on, test it before it leaves you stranded.
Does a hybrid Accord use the same battery?
No. The hybrid's 12V auxiliary battery is usually a smaller AGM unit (separate from the high-voltage drive battery). Always confirm the hybrid's group size in the manual — don't assume it matches the gas model.

Sources