Corrosion and rust visible on battery terminals and nearby metal surfaces inside the generator enclosure.

Safety first: Wear eye and hand protection. Turn OFF the generator and disconnect battery negative first, then positive.

Steps:

• Neutralize corrosion: Mix baking soda with water and apply to corroded areas on terminals and tray. Scrub with a brush and rinse with clean water.
• Inspect battery: Replace any battery that is cracked, bulging, or leaking.
• Check charger voltage: Verify the Gillette battery charger is not overcharging (around 13.2–13.6 V is typical). Adjust or replace if necessary.
• Protect terminals: After cleaning and reconnecting, coat terminals with dielectric grease or battery terminal spray.