Connect A Memory Saver
If you want to keep all of your settings when changing the battery, you need to connect a memory saver. If you do not do this, you could face some problems with your car potentially running rough or not shifting as normal. All of your radio codes will also be lost and you will need to put the code in again.
Most of the memory saver devices that you get will have a small 9V battery and an alligator clip. The clip will be placed on the battery cables. There are some devices that will plug into a port inside the car such as the cigarette lighter.
Disconnecting The Battery Cables
Before you can change the battery, you will have to put on work gloves and some safety goggles. This will protect you from acid leaks which could occur.
Once you have your safety gear on, you need to turn off the engine and remove the key from the ignition. You need to use an adjustable wrench to loosen the black negative terminal first. Once the nut can be removed, you need to pull on the end of the cable to detach it. The same process will need to be completed for the red positive terminal.
Remove The Old Battery
It is likely that the old battery is held in place with a strap or clamp. You will have to unfasten or loosen this before you are able to remove the battery from the tray. When ready, you will need to slowly lift the battery out and take care to not spill any acid while doing this.
If you are going to return your old battery, you need the receipt from the store. In these cases, you will generally get a refund on the core deposit. This should be done when you can because you will help the environment and get some spare change.
Before you buy your new battery, you will need to check the year, model, make and engine size of your car. You may also need to know what the trim level of your vehicle is. Once you have this information, you can choose the right battery for your vehicle.
Clean Out The Corrosion
Before you place your new battery in, you have to look at the battery cables, tray, and clamps. You should check for any damage or corrosion. All corroded areas will need to be scrubbed with a contact cleaner and a wire brush. You could also use baking soda mixed with water, but the results will not be as good and some residue could be left. After cleaning, you will need to coat the terminals with an anti-corrosion solution.
Install The New Battery
Your new car battery will generally weigh around 40 pounds and you might need to ask for help if you have issues lifting it. The battery must stay upright at all times. You should place it on the battery tray and secure it with the strap or clamp.
The red positive terminal will need to be connected and tightened first. You should then attach the black negative terminal. All of the cables will need to be tight and the battery properly secured before you remove the memory saver. You can start the car and check that everything is working correctly.