How to Replace a Car Battery

Learn how to safely replace a car battery with this simple step-by-step guide. Follow our instructions to disconnect and install your new battery.

Automotive

Tools Required (6)

Materials Needed (2)

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1.Park the vehicle on a level surface, turn off the engine, and engage the parking brake.
2.Open the hood and locate the battery to identify the positive and negative terminals.
3.Loosen the nut on the negative black cable terminal using your wrench and remove the cable from the post.
4.Loosen the nut on the positive red cable terminal and remove the cable from the post.
5.Remove any hold-down brackets or clamps securing the battery in place.
6.Lift the old battery out of the engine bay carefully, keeping it upright to avoid acid spills.
7.Clean the battery tray and cable ends using a wire brush or terminal cleaner to remove any corrosion.
8.Place the new battery into the tray, ensuring it is level and properly oriented.
9.Reinstall the hold-down brackets or clamps to secure the new battery.
10.Connect the positive red cable to the positive terminal first and tighten the nut.
11.Connect the negative black cable to the negative terminal last and tighten the nut.
12.Start the engine to verify the new battery is installed correctly and functioning.