How to Change a Side-Post Battery
Learn how to install a side post car battery. Side post refers to where the battery terminals emerge to connect to the vehicle. Side-post batteries have terminals on the side. Follow along step by step and use this video for trustworthy advice on this DIY project.
Refer to our other article if you are changing a top-post battery.
Change a Side-Post Battery
1. Safety First
Park the vehicle on a dry, flat surface and set the parking brake. The ignition should be off, and if the vehicle is warm, give it time to cool before starting this job. Wear safety goggles, gloves, and pull back long hair. You should never smoke under the hood, especially when working on batteries.
2. Disconnect Negative and Positive Battery Cables
Once your vehicle is turned off and cool, disconnect the negative ( – ) battery cable. This is a black cable. This is a side post battery, so there will be an 8mm fastener. Use an 8mm ratchet to loosen, and then move it safely out of the way.
Next, disconnect the positive terminal, which is always identified with a plus ( + ) sign, just as the negative is with a minus sign. It is very important that your ratchet or wrench not come in contact with anything that could be a ground, because this will cause sparks around the battery.
3. Remove the Battery
Look for something holding the battery in place. This can be a clamp or a bar. You’ll want to loosen or remove this to free the battery to be removed. Once the battery is free, take the battery out. It’s heavy, so steel yourself.
4. Clean the Terminal
Start with the bolt and clean the terminal until the metal is shiny. Use a wire brush for this step. Clean metal will create better conductivity, and corroded metal can get in the way of the battery’s ability to help start the car. Avoid breathing in dust during this step. You may want to wear a mask as well.
5. Install the New Battery
Place the new battery. When you do this, go ahead and install the clamp or bar or whatever is holding the battery in place. This stabilizer is very useful in preventing vibration and helping the battery last longer. Use some terminal grease on the battery terminals to encourage conductivity with the cables.
6. Connect Positive and Negative Battery Cables
At this point, connect the cables back to the terminal. Start with the positive and connect until it is snug. Do the same with the negative cable. Apply terminal grease here as well, to prevent corrosion.
7. Test the Vehicle
Test the car to ensure the battery works. Once it starts up, head over to AutoZone and take your old battery in for core credit.
Looking for a battery? Put in your vehicle on AutoZone.com to order a battery for pick up, or stop by your local AutoZone to get help with selecting and installation your new battery.