Battery maintenance is an important issue. Maintain a clean battery top and check terminals and cables for tightness and cleanliness. A dirty battery will dissipate its charge through surface contamination. Clean the battery top with a damp cloth and dry thoroughly.
To ensure maximum battery capacity on the charge and discharge, the battery terminals and the inside portion of the cable connector should be scraped or brushed. The terminals should be tight and free of corrosion. The battery should be cleaned using a baking soda and water mix, with a ratio of two tablespoons of baking soda to a pint of water. The cable connection should be cleaned and tightened regularly.
For battery service or replacement, go to a service station or dealer who sells and services the make of battery installed in your trailer.