Where do I find battery group size?
The battery group size is the code that identifies the fit, dimensions, and terminal setup of a battery for your vehicle. It is usually printed on the battery itself and can also be found in your owner's manual or on a vehicle placard.
Knowing where to look helps ensure you purchase a replacement that fits correctly and works with your car’s electrical system. This article walks you through the common places to find the group size and how to verify it before buying a new battery.
Where to look for the group size
Use these reliable sources to locate the exact group size code for your battery:
- On the battery label: Check the top or side of the battery for a line that says “Group Size” or “Grp Size” followed by a code such as 24F, 35, 48, or 94R.
- In the vehicle manual: Open the owner’s or maintenance manual and look under battery specifications or replacement guidelines for the recommended group size.
- On a placard in the vehicle: Look for a sticker near the driver’s door jamb, glove box, or under the hood listing the recommended battery size or group size for your model.
- Manufacturer or dealer websites: Enter your vehicle’s year, make, and model to see the endorsed group size in the specifications or parts lookup tool.
- Bring the old battery to a retailer: If you’re unsure, take the existing battery or its label to the store—the staff can verify the correct group size for you.
Verifying with multiple sources helps avoid buying a battery that won’t fit or connect properly with terminals and cables.
How to verify fit when shopping for a replacement
When you’re ready to buy, these checks help ensure the new battery matches your vehicle’s requirements:
- Confirm the exact group size code matches your vehicle’s specification (for example, 24F or 35).
- Compare the physical dimensions (length × width × height) to your current tray to ensure it fits in the battery compartment.
- Check terminal type and polarity to ensure the cables reach comfortably without strain or repositioning.
- Verify key performance specs that matter to your climate and usage, such as cold-cranking amps (CCA) and reserve capacity, which should align with or exceed the OEM recommendations.
If any of these factors don’t align, consult a professional or return the battery to the retailer and request the correct group size for your vehicle.
Summary
Your battery group size is the code that determines fit, dimensions, and terminal layout. You’ll typically find it on the battery label itself, in the vehicle’s owner’s manual, or on a placard near the driver’s door. If in doubt, use the manufacturer’s website or visit an auto parts store with your old battery to confirm the exact group size and ensure a proper, safe replacement.
