It is advisable to always check the replacement battery against the existing one to ensure that size, hold down, terminal configuration, cranking capacity and bonnet clearance are suitable for the application.
It is best to use some form of battery backup device if possible. We use a small battery with a cigarette lighter plug attached which inserts into the vehicles cigarette lighter socket and keeps power to the cars computer so it does not reset.
Ensure all accessories are switched off in the vehicle.
Remove the negative (-) terminal first.
Remove the positive (+) terminal and battery hold down.
Inspect the battery tray for corrosion. If necessary clean using baking soda (the baking soda neutralises the acid) and water, then rinse with clean water.
Place the new battery in the tray and ensure it is level.
It is good practice to clean the inside of the terminal with a wire brush and remove any other corrosion.
Replace the battery hold down and ensure the battery is secure.
Replace the positive terminal and tighten.
Replace the negative terminal and tighten. The negative terminal should always be replaced last.
Never over tighten or hammer terminal onto the battery as this can damage the posts.
Some form of corrosion protection over the terminals is a good idea, we use a spray designed to reduce corrosion, but grease or petroleum jelly also works fine.