How to change a car battery

Imagine turning the key in your car's ignition, only to be met with silence instead of the familiar engine roar. This frustrating scenario often points to a dead or flat car battery. The good news? Changing a car battery is a simple task you can handle with a bit of guidance.

In this blog post, we’ll guide you through the essentials of replacing your car battery, from understanding its function to a step-by-step replacement process. Whether you’re a seasoned DIYer or a first-timer, this guide will give you the confidence to do the job right.

Before we dive in, let’s cover some basics. A car battery is a rechargeable device that powers your engine and vehicle’s electrical systems. Over time, batteries degrade and need regular checks and timely replacements for reliable performance.

You’ll learn how to identify when your battery needs replacing and how to do it safely and effectively. If you'd rather leave it to the pros, you can book a service at Drift Bridge Group here.

Ready to get your car back in shape? Keep reading for our comprehensive step-by-step guide to changing your car battery!

How to Remove the New Battery

1. Preparation: Safety First

Before you begin, ensure that your car is parked on a flat surface in a secure, well-ventilated area. It's important to turn off the engine, remove the keys from the ignition, and engage the parking brake. Wear insulated gloves and safety goggles to protect yourself from the sulfuric acid in the battery, which can be corrosive. Also, remove any metal jewellery to prevent accidental electric shocks.

2. Locate the Battery

The first step in changing your car battery is to locate it. In most vehicles, the battery is found in the engine compartment, either near the front bumper or close to the windshield. Some vehicles may have the battery in the trunk or under a plastic cover. If you're unsure, consult your vehicle's owner's manual for guidance.

3. Disconnect the Negative Terminal

Always start by disconnecting the negative terminal. The negative terminal is usually marked with a "-" symbol or labeled "Neg". Use a spanner or pliers to loosen the nut or bolt securing the cable to the terminal. Once it's loose, gently twist and pull the cable away from the terminal. Secure the cable away from any metal parts using a cable tie to prevent it from accidentally making contact.

4. Disconnect the Positive Terminal

Next, disconnect the positive terminal, which is usually marked with a "+" symbol or labeled "Pos." Follow the same procedure as with the negative terminal. Remember to secure this cable as well, ensuring it doesn’t touch any metal surfaces or the negative cable.

5. Remove the Battery Hold-Down Bracket

Some batteries are held in place by a bracket. If your battery has one, remove the bracket using a socket wrench or the appropriate tool. Keep the fasteners in a safe place, as you will need them to secure the new battery.

6. Lift Out the Battery

Carefully lift the battery out of the tray. Be mindful of its weight, as car batteries can be quite heavy (up to 20 pounds or more). Set the old battery aside on a stable, non-metal surface.

7. Clean the Battery Tray

Before installing the new battery, take a moment to clean the battery tray. Remove any corrosion or residue using a mixture of baking soda and water or a dedicated battery cleaner. Dry the tray thoroughly to prevent any future corrosion.

How to Install the New Battery

Now that you've safely removed the old battery, it's time to install the new one.

1. Position the New Battery

Place the new battery into the tray, ensuring it's oriented the same way as the old one. Secure it with the hold-down bracket you removed earlier.

2. Reconnect the Positive Terminal

Start by reconnecting the positive terminal. Slide the cable onto the terminal and tighten the nut or bolt to secure it. If your battery has a protective cover, place it back over the terminal.

3. Reconnect the Negative Terminal

Now, reconnect the negative terminal by repeating the process. Make sure the connection is tight and secure, but avoid over-tightening, as this could damage the terminal.

4. Check the Connections

Double-check both connections to ensure they are secure. Loose connections can lead to starting issues or electrical problems down the line.

5. Start the Engine

Finally, start your car to make sure the new battery is functioning correctly. If the engine starts without any issues, you’ve successfully changed your car battery!

Additional Tips

• Dispose of the Old Battery Properly: Car batteries contain hazardous materials and should be disposed of at a recycling center or an auto parts store that accepts old batteries.
• Reset Electronic Settings: Disconnecting the battery will reset your car's clock, radio, and other electronic settings. Be prepared to reset them once your new battery is installed.

By following these steps, you can change your car battery safely and efficiently. Regularly checking and maintaining your battery will help extend its life and keep your vehicle running smoothly.