How to Clean a Clock Battery Terminal

Locate the battery terminals at the ends of your batteries. Examine the battery terminals for dirt or corrosion before installing them in your clock.

Clean any dirt or corrosion off of the battery terminals using a soft optical cloth. Remove stubborn corrosive build-up by rubbing the terminals with a small square of fine-grit sandpaper.

Wipe out the inside of the clock's battery compartment with a soft optical cloth to remove any dust or dirt.

Inspect the battery contacts in the clock's battery compartment for dirt or corrosion.

Rub the battery contacts with a slightly damped cotton swab to remove any dirt or corrosion. Use a small square of fine-grit sandpaper to remove any build up that you cannot remove using water alone.

Wipe out the inside of the clock's battery compartment again using a slightly dampened optical cloth. Allow the inside of the battery compartment to dry completely before installing your batteries.