What should be done with the battery terminals during engine maintenance?

During engine maintenance, it is important to tighten and clean the battery terminals to ensure proper electrical connections. Loose or corroded terminals can lead to inefficient power transfer to the engine, which may cause starting problems or affect the overall performance of the boat’s electrical system. Cleaning the terminals removes any corrosion or dirt that may interfere with the connection, thereby ensuring that the battery effectively powers the engine and other electrical systems on board. Regular maintenance of the battery terminals also extends the life of the battery and enhances reliability when out on the water.

Options that suggest leaving the terminals untouched or sealing them with tape do not address the potential issues of corrosion or loose connections, which could lead to significant problems. Replacing them with new terminals might be unnecessary if they are in good condition and simply need cleaning and tightening.