How to Adjust a Car Battery Cable

Learning how to adjust a car battery cable could be a really useful skill and could help you save some money. If your car isn’t working properly, your first instinct may be to change the battery when your car may actually need a battery cable adjustment. With the easy steps outlined below, you can verify and adjust your car battery cable once a week so that you’ll never have to worry about it. The tools you need are simple and you can find most of them at an auto parts store.

Tools and Materials Needed:

  • Clean wipes
  • Rubber band
  • Wire brush
  • Plastic bag
  • Wrench set
  • Battery terminal cleaner 

Step 1 - Clean the Inside Parts

You have to clean all the inside parts of the car that are near the battery. This will allow you to see all of the parts you’re working with more clearly. Use a clean wipe to make sure that there aren’t any impurities while you’re working in the area. Cleaning is very important for this kind of work.

Step 2 - Remove the Positive Cable

Use a wrench to loosen the pin situated on the positive cable connector. Remove the positive cable connector from its positive battery terminal. Always be extremely careful when you work with wires.

Step 3 - Secure a Plastic Bag Over the Cable

Put the plastic bag over the positive battery cable connector. Secure the plastic bag with the rubber band. This will be a temporary measure. You will have to remove the bag later on in the procedure so be sure to keep this in mind when you’re securing it. That is, make sure the rubber band isn’t too tight that you won’t be able to remove it.

Step 4 - Remove the Negative Cable

In this step, you’ll be removing the negative cable. This part should be easy because it’s similar to the procedure in Step 2. Use a wrench to loosen the pin situated on the negative cable connector. Carefully remove the negative cable connector from its negative battery terminal.

Step 5 - Clean the Battery Terminals

All battery terminals should be cleaned with a battery terminal cleaner. Also clean the connectors on the battery cables thoroughly with a wire brush. This is very important. It’s safer to clean everything before you start working with wires and battery terminals.

Step 6 - Connect the Negative Cable to the Negative Terminal

Take hold of the negative battery cable connector. Place the negative cable connector in the negative terminal on the battery. Adjust it with the wrench, but be careful with the wires - they are delicate and you could easily damage them. 

Step 7 - Connect the Positive Cable to the Positive Terminal

Now you have to remove the plastic bag from the positive battery cable (You had secured the plastic bag in Step 3). Place the positive cable on the positive battery terminal and adjust it carefully (as in the previous step). You have officially finished the adjustment process and you can now drive wherever you want to and verify your battery cable whenever you want to.