how to change a battery in a car
Instructions. With the engine off, pop the hood and find the battery. Detach the negative (black) battery cable from the battery. First loosen the nut with a combination wrench. A better tool to use would be battery pliers or a battery wrench. Twist and pull up on the end of the cable with your hand.atteries are heavy, so grab from the bottom using both hands. If the battery has a handle, use that instead. Use baking soda mixed with water and a wire brush to clean any corrosion from the battery tray and the hold-down clamp. Clean the battery cable connectors with a wire brush.