7 Best Car Batteries of 2024, Lab-Tested and Reviewed

Before you buy a new car battery, know the correct group number for your vehicle, which varies depending on make, model, year, and engine size.

Batteries are defined by physical size, type, and placement of the terminals, as well as mounting style. Be sure to replace your battery with one that’s from the same group so that it will fit its tray and the leads will connect properly.

The basic specs for a replacement battery can be read off the battery that’s currently in your car.

There are other sources to help you select the proper battery, including your owner’s manual, battery company websites, in-store guides, or your local mechanic. If you bought a used car, don’t assume it has the proper battery installed. Be sure to check with one of those other sources to identify the correct type. 

Below are the best-performing batteries in each tested group.