Your Camry won’t start. Or it cranks slowly. Or the battery light just came on.
Whatever brought you here, this guide covers everything — the right battery size for your year, how to replace it yourself, and what to watch out for on hybrids.
Quick Reference: Camry Battery Size by Year
| Year | Engine | Battery Group Size | Type |
|---|---|---|---|
| 2024–2025 | Hybrid | H5 | AGM / EFB |
| 2023 | Gas (2.5L / 3.5L V6) | H6 | EFB |
| 2023 | Hybrid | H5 | AGM / EFB |
| 2022 | Gas | H5 | EFB |
| 2021 | Gas | H5 | EFB |
| 2020 | Gas (2.5L) | H5 or H6 | EFB |
| 2020 | Gas (V6 3.5L) | H6 | EFB |
| 2019 | Gas | H5 or H6 | EFB |
| 2018 | Gas | H6 | EFB |
| 2012–2017 | Gas | 24F | Standard / AGM |
| 2007–2011 | Gas | 24F or 35 | Standard |
| 2007–2011 | Hybrid | Group 24 AGM | AGM |
| 2002–2006 | Gas | 24F or 35 | Standard |
| 1997–2001 | Gas | 24F or 35 | Standard |
Always double-check the sticker on your existing battery or check your owner’s manual before buying. Group size can vary by trim and engine on the same model year.
What Battery Type Does a Camry Use?
This is where a lot of people get tripped up.
2018 and newer gas Camrys use an Enhanced Flooded Battery (EFB), not a standard lead-acid battery.
The 8th-gen Camry has a smart charging system in the ECM that’s programmed specifically for EFB or AGM chemistry.
Swapping in an old-fashioned standard flooded battery isn’t ideal on these newer models.
Can you upgrade to AGM? Yes sure.
Some of my friends on the ToyotaNation forum have confirmed that AGM and EFB have charge profiles that are similar enough that no Techstream reprogramming is needed on the 8th-gen Camry.
An AGM upgrade is a solid choice if you want longer life and better heat resistance.
Older Camrys (1997–2017) are less picky. A standard Group 24F or 35 lead-acid battery works fine, though AGM is always a valid upgrade if the price makes sense to you.
Camry Hybrid Battery: What You Need to Know
If you own a Camry Hybrid, there’s something important to understand first.
Your hybrid actually has two batteries:
1. The high-voltage hybrid battery pack — This powers the electric motor and assists the gas engine. It lives in the trunk or under the rear seat. This is the big one. Replacing it is a dealer/specialist job and costs well over $1,000. It’s not what we’re covering here. I’ll write a separate article about that.
2. The 12-volt auxiliary battery — This is what most owners need to replace. It’s a regular 12V battery, but it powers the car’s electronics and allows the hybrid system to “wake up.” Without it, the car won’t start even if the hybrid battery is perfectly fine.
Where Is the 12V Battery on a Camry Hybrid?
This catches a lot of people off guard: it’s in the trunk, not under the hood.
On most Camry Hybrid models (2007–2025), the 12V battery sits behind a panel on the passenger side of the trunk. There’s no battery under the hood at all.
Toyota did this intentionally — keeping the battery away from engine heat helps it last longer.
That said, replacing a Camry Hybrid’s 12V battery yourself is more involved than on a gas model.
The battery is vented to the outside of the car, which means you can’t just drop in any AGM battery — it needs to be the right type.
Many owners go the dealer route for hybrid battery replacement, though independent shops that know Toyota hybrids are a solid (and usually cheaper) option.
One owner on ToyotaNation reported their 2007 Camry Hybrid went 197,000 miles on the original 12V battery. That’s extreme. Most hybrid 12V batteries last 5–7 years — longer than gas model batteries — because the car’s computer manages the charge more carefully.
How Long Does a Toyota Camry Battery Last?
For gas models, 3–5 years is the typical range.
For hybrid 12V batteries, 5–7 years is more common, since the smart charging system prevents overcharging and deep discharge.
A few things that shorten battery life:
- Extreme heat (the biggest killer — hot climates are rough on batteries)
- Short trips where the battery never fully recharges
- Leaving the car parked for weeks at a time
- Interior lights or accessories left on overnight
- A weak alternator that never fully tops up the charge
Signs Your Camry Battery Is Failing
Don’t wait until you’re stranded. Watch for these:
- Slow or sluggish cranking — The engine turns over, but it sounds labored. This is usually the first sign.
- Needing a jump start — Once is bad luck. Twice in a month means the battery is going.
- Headlights dimmer than usual — Especially noticeable at idle.
- Electronics behaving oddly — Radio resets, power windows slower than normal, dashboard lights flickering.
- Battery warning light — Might mean the battery, but could also be the alternator. Get both tested.
- Car sitting fine one day, dead the next — If there’s no obvious cause (no lights left on, no accessories), a battery that drops voltage overnight is typically worn out and can no longer hold a charge.
If you’re unsure, most AutoZone, O’Reilly, and Advance Auto Parts locations will test your battery for free.
DIY Battery Replacement: Gas Camry (2002–2023)
No special skills required. You need a wrench and about 15 minutes.
Tools Needed
- 10 mm wrench or socket
- 12 mm wrench or socket
Gasoline Camry:
- Park on a level surface, turn off the engine, and wait 2–3 minutes for the vehicle’s electronics to shut down.
- Disconnect the Battery. Loosen and remove the negative (-) terminal first using a 10 mm wrench. Open the positive terminal cover, then remove the positive (+) terminal.
- Remove the Old Battery. Remove the 12 mm bolt securing the battery hold-down bracket. Lift out the bracket, then use the battery handle to remove the battery.
- Install the New Battery. Place the new battery into the tray with the positive terminal facing the front of the vehicle. Reinstall and tighten the hold-down bracket until the battery is secure. Make sure the battery sits flat in the tray before tightening the bracket.
- Reconnect the Battery. Connect the positive (+) terminal first and reinstall the terminal cover. Connect the negative (-) terminal last.
- Start the Vehicle. Start the engine and confirm everything works normally. You may need to reset the clock or other saved settings after replacing the battery.
Remember: Disconnect Negative → Positive. Reconnect Positive → Negative.
Hybrid Camry:
Unlike the gas-only Camry, the 12V battery on the Camry Hybrid is located in the trunk, behind the right-side trim panel.
- Disconnect the Battery. Remove the negative (-) terminal first using a 10 mm wrench. Remove the positive (+) terminal.
- Remove the Battery. Remove the 12 mm bolt securing the battery hold-down bracket. Lift out the bracket and remove the battery.
- Install the New Battery. Place the new battery in the tray. Make sure the cables and vent tube stay clear and don’t get trapped underneath. Reinstall the hold-down bracket and tighten it until the battery is secure.
- Reconnect Everything. onnect the positive (+) terminal first.Connect the negative (-) terminal last. Reconnect the vent tube. Ensure both terminal clamps are fully seated before tightening. Don’t overtighten the terminal bolts—snug is enough.
- Reassemble and Test. Reinstall the trunk trim panel. Start the vehicle and verify it enters READY mode. You may need to reset the clock, radio settings, or reinitialize the power windows after replacing the battery.
Important: ECM Reset After Battery Replacement
Here’s something a lot of people don’t know until it happens to them.
After swapping the battery on older Camrys (particularly 1997–2011), you might notice:
- Rough idle for the first few days
- Engine hesitation or stalling
- Speedometer acting up temporarily
This is normal. Disconnecting the battery resets the ECM (engine control module), which loses its learned settings for your driving habits.
The fix is simple — just drive the car normally for a week or so, and the ECM will relearn everything.
One thing to avoid: don’t try to swap the battery while the engine is running.
Even though it might seem like a way to avoid the reset, it risks a voltage surge that can damage the ECM — which can cost $100–$600 to replace.
If your Camry has a factory anti-theft or immobilizer system and it activates after the battery swap, you’ll need your owner’s manual to reset it. It’s usually a straightforward procedure, but worth knowing about beforehand.
How Much Does a Camry Battery Cost?
At a shop or dealership: Expect to pay $150–$300 total, including labor. Dealers tend to be on the higher end.
DIY (buying the battery yourself):
| Battery Type | Typical Price |
|---|---|
| Standard lead-acid (Group 24F / 35) | $80–$130 |
| EFB (H5 / H6) — 2018+ gas models | $120–$180 |
| AGM upgrade | $160–$250 |
| Camry Hybrid 12V (dealer) | $200–$350+ |
Recommended Brands:
Interstate, DieHard, Optima (for AGM), and ACDelco. The OEM Camry battery is made by Panasonic (or Clarios/Johnson Controls for US-built models) — good quality, but you’ll pay dealer prices for it.
One thing to note on hybrid batteries. If a dealer quotes you $316+ for the OEM hybrid 12V battery with only a one-year warranty (as some owners have reported), it’s worth calling around to Toyota specialists or independent shops. The part itself is the same battery; you’re just paying for where it comes from.
FAQ
Final Words
For most Camry owners, battery replacement is a straightforward job. The tricky part is knowing which group size fits your year and whether you need EFB or AGM instead of a basic lead-acid battery.
Gas model owners on 2018 and newer: stick with EFB or upgrade to AGM. Hybrid owners: don’t be alarmed that there’s nothing under the hood — your 12V battery is in the trunk and will likely outlast several batteries on a comparable gas car.
When in doubt, a free battery test at any major auto parts store takes about five minutes and tells you exactly where you stand before spending a dime.
If you have any further questions or want to share your experiences, please feel free to leave a comment below!