Heres how to replace your car battery 1 check your vehicle owners manual for the your car batterys location space under the hood is at a premium in many 2 identify the positive and negative posts and the respective cables attached to each the positive post may have a red 3 using a . How to change a car battery without losing settings step 1 finding out the problem the first step is to determine whether you need a battery change or not sometimes its step 2 getting the right battery size get the right model number car name and engine size info and take that to your . How to change a car battery step 1 locate the battery and gather the necessary tools if playback doesnt begin shortly try restarting your device step 2 identify positive and negative cables if playback doesnt begin shortly try restarting your device videos you step 3 loosen the . How to change a car battery gather the correct materials before you get started you will need the following materials gloves ratchet with make sure the car is in a safe place make sure you have your car parked on a flat surface away from traffic away put the parking brake on and turn