Keep your battery clean.  Keep your terminals clean. Maintain proper fluid levels. Keep your battery charged. Maintain your battery during all seasons: bring it indoors and purchase a battery maintainer (call now to see if we have them in stock!) Trojan Battery Company has manufactured batteries for eighty years. Our experience shows that the key to achieving optimum performance and long life is a solid battery maintenance program using the simple procedures outlined here. Trojan recommends the following equipment for use in battery care and maintenance: Wrench Distilled water Voltmeter Hydrometer Post cleaner Baking soda Petroleum jelly Goggles and gloves CAUTION: Always wear protective clothing, gloves and goggles when handling batteries and electrolyte.