How to Change Your Car's Battery


Your vehicle's battery is a vital component that powers all electrical systems, such as starting your vehicle, lights, radio, stereo, and more. Experts say your car's battery should be replaced every four to five years, but we highly recommend checking its status regularly. We understand you may not have the time or money to repair your vehicle at a shop, so we provide a step-by-step guide to replacing your battery. Replacing a car battery is one of the most common DIY repairs drivers have completed over the years, but it is essential to be prepared before starting your replacement. 

What You'll Need Before Starting

Here are some supplies you'll need before starting your battery replacement:


  1. New Battery - Refer to your vehicle's owner's manual to ensure you purchase and install the correct type for your car.

  2. Wire Brush, Baking Soda/Water, or Battery Terminal Cleaning Kit

  3. Wrenches (refer to the vehicles owner's manual for the exact size)

  4. Gloves and Safety Equipment

Step 1 - Turn Your Vehicle Off 

Park your vehicle on a flat, stable surface. Remove the key from the ignition for added safety while replacing your battery.

Step 2 - Locate and Disconnect Your Battery

Most vehicle batteries are located under the hood inside the engine bay. The battery will have two cables labeled (+) and (-). Use your wrench to disconnect the negative connection first (-), then repeat for the positive connection (+). 

Step 3 - Remove Your Old Battery

Once all connections have been removed from your battery, carefully lift the battery out of your vehicle. Remember that car batteries can be heavy, so lift them with two hands.

Step 4 - Clean Battery Terminal

Before installing your new battery, use the wire brush, baking soda/water solution, or Battery Terminal Cleaning Kit to remove any corrosion and debris. This will ensure your new battery has a good connection for years.

Step 5 - Install New Battery

Place your new battery in the terminal and reconnect any cables, clamps, and screws removed in Step 2. Ensure the cables are on the correct (+) and (-) connections before moving to Step 6.

Step 6 - Test Your Battery

Test your new battery by starting your vehicle. If your car doesn't start, ensure your connections are correct and secure before testing again.



Changing your car's battery can be a simple and rewarding repair on your vehicle. Although it is a common DIY repair, we highly recommend consulting with a professional if you run into any problems while replacing your vehicle's battery. If you're having more severe problems with your car, contact Bob Moore Collision for any collision repair or body shop repairs.