How to fit a Car Battery

If you’ve noticed that your headlights are starting dim or you need to frequently jump start your vehicle, it’s probably time to change the battery. After all, we’ve all been in the annoying situation when your battery goes flat when you’re already running late and need to be somewhere important.

When should you replace your car battery?

You are probably wondering when you need to replace your car battery, on average it is in between around 3-5 years, however there isn’t any specific time frame, it can depend on how well it’s been maintained.

Why do car batteries die?

As modern day vehicles have integrated on-board computers, it means that they demand much more from the battery, resulting in them wearing down quicker after time, so you need to ensure that you choose a battery than can handle the demand.

Batteries naturally charge whilst they are on the go, so if the vehicle is not in use for prolonged periods of time it is likely that the battery will go flat quicker.

If your battery has gone flat but you don’t believe it needs to be replaced, take a look at our how to charge a car battery article. However, you need to remember that they deteriorates gradually every time its charged by the engine.

What car battery do you need?

Every different vehicle needs a different car battery, as it needs to be suitable to their electronic demands, and features, for example, vehicles with stop-start engines require AGM batteries.
Fill in our battery finder to see which batteries are most suitable for your vehicles make and model.

Even though we recommend that you get your battery fitted by one of our patrols or in an RAC approved garage, we have put together a step to step guide if you are wishing to do it yourself.

Check it out now for further information:

Ensure that you are parked on a surface that is completely flat and level and take the keys out of the ignition.

As batteries can contain acid, wear protective goggles and gloves.

As all of your electronic equipment will reset, such as radios and sat navs, ensure that you have all of their PIN codes and settings.

Check your owners handbook to see whether your systems need to be rest after your battery has gone flat or been disconnected.

Open the bonnet, some use a bonnet stay to keep open but some stay up on their own.

Remove all of the plastic trims or covers from the battery.

Ensure that your battery cables don’t get mixed up by labelling them.

Now its time to disconnect the cables, always disconnect the negative one first as it could cause damage to the vehicles electrical system.

So, loosen and disconnect the negative (-) clamp and move the clamp from the battery post.

Then, repeat for the positive (+) cable.

Remove any screws, clamps or bars that hold the battery in place.

Disconnect any attached vents then lift out the battery.

Get the positive and negative posts the right way round, then fit the battery into place.

If it needs to be held in place by pipes, screws, clamps or bars, ensure that you connect them back up properly.

Reconnect the positive (+) and negative (-) cable clamps back into place and ensure that the connection is as far down on the battery as possible.

You are now able to start the ignition and get back on the road.

After you have followed our tips you will be able to fit your new battery, however, remember that we are able to do it in an approved garage or by one of the patrols at home, at work or at the roadside.

Take a look at our car batteries to find the most suitable for your vehicle.

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