Bi metallic lugs need to be inspected and maintained over time to guarantee safe, efficient, and durable electrical connections. Initial maintenance involves regular visual checks to inspect for any wear, corrosion, or heat signs at the points of connection. Discoloration, deposits, or observable oxidation on the lug or cable must be checked immediately to avoid further deterioration.... https://www.pioneerpowers.com/bimetallic-lugs-and-connectors.php