How To Clean Corroded Battery Cables. Spread newspaper over the surface where you plan to work. The baking soda will react by bubbling up quite ferociously for a couple seconds.

It has abrasive properties yet its still gentle on electronics. Apply vinegarlemon juice onto the corrosion mess. Use a turkey baster to slowly and carefully apply some of this solution to the area around your corroded battery cable and terminal.
If the corrosion is really tough you may want to let the paste of baking soda and water sit for a few minutes to work on dissolving the corrosion.
Apply the baking soda paste to any dirty or corroded parts of your cars battery with a toothbrush then let it sit for 10 minutes. Use the brush to loosen and remove deposits and corrosion from the terminals and connectors. Rinse the battery with clean water and then dry it with a used towel or compressed air. First set up a safe place to do the job.

