1. Maintain water levels - If your battery has removable vent caps, check the water levels occasionally and add water only when low. There is no need to add water if the electrolyte level is ½” above the plates.
2. Keep Terminals Clean - Visually inspect the terminals and cables at least once a year, especially in hot temperatures, for signs of corrosion. If dirty or corroded, clean the connections with a scraper and wire brush to ensure a good connection and proper starting.  
3. Keep Case Clean - Keep the top of the battery clean of heavy dirt and oil with a cloth dampened with ammonia or a 50/50 solution of baking soda and water. Then rinse with clear water and allow to thoroughly dry.
4. Keep Battery Charged - If you’re vehicle is not driven weekly, it may be necessary to externally charge your battery occasionally. Lack of use is hard on a battery, especially an automotive battery. Any unused battery, regardless of chemistry, will self-discharge over time.      

Usually it takes several hours to effectively recharge a battery. It is best to slow charge the battery. Slow charging rates vary depending on the battery’s type and capacity. However on an automotive battery 10-amps or less is considered a slow charge while 20-amps or above is generally considered a fast charge. Repeated fast charges may overcharge a battery and reduce service life.