Minimise inconvenience and down time. Although batteries are supplied with a variety of published life spans, the fact is that some batteries demonstrate a useful life of as little as three to five years. There are several factors that contribute to the shortened usefulness of a battery, including the number of discharges, depth of discharges, environmental conditions and lack of regular maintenance. Regular battery maintenance and pro-active battery replacement are the best solutions for reducing the risk of system down time. Eaton has the battery services that your UPS system needs.