How to Replace a Car Battery

January 28, 2021 

Difficulty: Easy 

Duration:  20-40 Minutes 

How Often:  Every 3-4 years  


Tools Necessary for Install:



Automotive batteries have a fixed lifespan, so they will not last forever, even if you take care of them properly. If you notice your car needs a jumpstart or if the headlights begin dimming, then it may be time to replace the battery. Fortunately, changing your car's battery is so quick and easy that it can be completed with a few basic tools. However, in some cars, the batteries are fitted in tough-to-service areas. In such cases, consider changing the car battery at your local car service center.


How to Replace Car Battery



Before you replace a car battery by yourself, you must ensure to follow all necessary safety precautions.

  • Park the car on a dry, flat surface away from traffic, open flames, or water. Ensure the area is well ventilated.
  • Engage the vehicle's parking brake.
  • Turn the ignition off.
  • If the car is warm, give it time to cool before starting your job.
  • Remove all metal jewelry that you are wearing.
  • Wear gloves and a mask at all times
  • Wear safety goggles to protect your eyes.
  • Pull back and tie long hair.
  • Wear old clothes that you do not mind getting dirty or greasy.
  • Never smoke when near the hood or when handling the battery.
  • Be cautious about creating any electrical sparks around the car.

Buying a new battery

 

Before you remove the old battery, buy a new battery as per the size, dimension, make, and model of your car. You must ensure that the new battery matches the original battery. If you are unsure if your battery will fit, you can carry the old battery with you to the auto parts store for reference or give us a call at 1-800-598-1484.

Removing the old battery

  

1. Open the hood of your car and locate the car battery. The positive and negative terminals are labeled with a plus (+) sign and a minus (-) sign. It is imperative that you always disconnect the negative cable first to prevent electrical shorts.

2.  Most car batteries have a plastic cover or a restraint to keep the battery in place, which is a type of bolt or some other fastener. Remove the restraint to take out the battery.

3.  Use a wrench to remove the battery cables. Some batteries have quick-release clamps for which you would not require any tools. After removing the negative cable, tie it to the engine bay using a cable tie so that it does not come in contact with any metal surface. Similarly, disconnect the positive cable and secure it separately using a cable tie.

4.  Inspect the battery for any clamps around it. Carefully, remove all connectors that hold the battery in place. Once everything is removed, lift the battery, remove it, and place it on a flat surface away from the car. If you are unable to lift the battery by yourself, ask someone for help. Ensure anyone else helping you, adheres to the proper safety protocols as detailed at the beginning of the article. 


Cleaning the cables and terminals

Inspect the battery terminals for corrosion or dirt buildup. Clean it carefully using a hard brush or a solution of baking soda and water. Then, rinse the terminal with water and clean it well. Ensure the terminal clamps and the battery tray are dry before you install the new battery. You can also use an anti-corrosive spray to prevent corrosion in the future.

Remember to stay clear of any acid present in batteries. This fluid are corrosive and can cause burns to skin or clothes.


Installing the new battery

1. Once the battery tray has dried completely, place the new battery so that it fits correctly in the tray. 

2. Secure the fasteners on the bracket to ensure the battery does not move around or vibrate when the car is moving.

3. Undo the cable tie to reconnect the positive cable first. Place the cable over the terminal and use a wrench to tighten it. Be careful not to touch the end of the cable to any metal surface, as this could cause a dangerous electrical discharge.


WARNING: 

When reconnecting the battery, always secure the positive terminal first before the negative terminal. This will ensure that you do not inadvertently complete the electrical circuit before everything is connected.

Then, repeat the process for the negative cable as well. Remove the cable tie and reattach the negative terminal. Tighten the clamp using a wrench.

If required, you can apply lithium grease on the positive and negative terminals to prevent corrosion. While applying, ensure the lithium grease does not fall on any other part of the engine block.


Checking the new battery

After you have installed the new battery, close the car hood. Ensure you remove all tools from under the hood. Start the car and check if the battery is working fine and all electronic devices are working properly. If you have done everything correctly, and your battery was the likely cause of the problem, then the car should start right up. You can then reset the clock, radio, and navigation system accordingly.

If you notice any issue that you are unable to resolve, reach out to your local service center immediately.


Disposing of the old battery

Some auto parts stores allow you to trade your old battery for a new one. If your auto parts store is not willing to take your old battery, take it to a service center or recycling center for safe disposal.

Remember that car batteries contain highly toxic materials and cannot be thrown out along with your garbage. You must dispose of your car batteries properly and safely so that it does not end up damaging the environment or anyone else.


Now that your ready to replace your old battery, check out some of our most popular car batteries available at up to 40% MSRP!
Popular Ford Car Batteries 

Popular Mazda Car Batteries 
Popular Volvo Car Batteries 

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