How to Change Side Post Battery Terminals to Top Post

The trend of side post car batteries is over. But don’t do a double take if you find one after lifting your car hood. Some cars still come with side post batteries, and you might own one of them. However, you can do side post to top post conversion for seamless car battery performance. To do so, you need to know how to change side post battery terminals to top post in the first place. This step-by-step guide will lead you through a smooth conversion procedure.

How to Change Side Post Battery Terminals to Top Post

You might be asking yourself if you can put a post car battery on a side mount without the help of a professional. Yes, you can. Follow these steps for a successful conversion of a side post terminal.

1. Remove Car Battery

As you will be dealing with side post batteries, removing the battery from the car will be more convenient. Place the removed battery in an outdoor or ventilated place, far from anything inflammatory.

convert side post battery to top post
Remove the battery carefully from the car. Source: AutoZone

2. Prepare the Tools

Now is the time to get ready with all the necessary tools. You may already have some items in your garage.

  • Pliers
  • Wrenches
  • Post Converter
  • Positive and negative wires with Clamp-on ends
  • Gloves and Safety glasses

3. Remove the Cable

The car battery has a negative terminal of black color that you have to detach. Be cautious and keep it away from the positive terminal (red color). If the loose wire touches any metal, a spark will occur, which you need to avoid.

4. Change the Cable Position

Let’s move on to the next part of how to convert side post to top post, which is removing the positive cable from the battery terminal.

Strip off the insulation by about a half-inch from the loose cables to expose the wires. Proceed to attach the clamp-on ends to these two cables. These easy-to-install ends are compatible with almost all types of battery terminals.


5. Replace Both Battery Terminals

At this stage, you have to convert side post battery to top post by replacing both side-post terminals with post converters. These converters must reach the top of the battery while stretching between the sides. Use lead terminals for the best results.

6. Connect the Positive Cable

Reattach the red positive-side cable to the converter. You should not have any trouble attaching the clamp-on ends to the battery terminal. Check if the cable is firmly attached by putting pressure on it with your fingers before moving to the next step.

side post to top post conversion
Connect the terminals firmly to their ports. Source: AutoZone

7. Attach the Negative Cable

Follow the same procedure mentioned above to connect the negative side cable. Keep the negative cable and your hand away as much as possible from the positive side because close contact may trigger electrical arcing.

8. Apply Spray to Avoid Corrosion

The last step of car battery conversion is applying corrosion-resistant spray on the terminal and cable. It saves the whole connector from wearing out too soon.

This is how to change side post battery terminals to top post at home. You can do it easily just by following this procedure and taking proper safety measures. Such a conversion will make battery maintenance much easier.