What is the proper procedure for cleaning battery terminals?

To clean battery terminals, first ensure the vehicle is turned off and remove the negative terminal (black) followed by the positive terminal (red). Use a mixture of baking soda and water to neutralize any corrosion, applying it with a brush or cloth to the terminals and cable ends. Rinse with clean water and dry thoroughly before reconnecting the positive terminal first, followed by the negative terminal. Finally, ensure a tight connection and check for any remaining corrosion.