To change a car battery pop the hood of your car and locate the battery which will be kept on either side of the cars frame disconnect the negative terminal which is labeled with a minus sign before disconnecting the positive terminal to keep it from short circuiting next remove the battery and clean the terminal clamps with baking soda and a wire brush then insert the new battery and connect the positive and negative terminals finally tighten the terminal clamps . After youve removed your car battery its time to install the replacement apply terminal grease before attaching the positive cable first and then connecting the negative cable the exact installation method will vary depending on whether you are installing a top post or side post battery you can find articles describing the steps for and videos of each installation procedure below. Car battery replacement problems how to replace a battery the right way diy with scotty kilmer power supply cable memory saver http amznto 2nxod9ehow . How to change a car battery without losing settings for most cars installing a new battery is a quick and easy job you could either go to your trusted mechanic or simply do it at your own you dont need too much stuff to change the battery