For the toughest, outdoor use that requires batteries to deliver plenty of cranking amps to power tractors and recreational vehicles across the roughest terrain. The flush cover Group U1 is calcium maintenance-free, eliminating the need to add water and the danger of harmful acid spills and lost vent caps. These flush cover batteries deliver more power-per-pound and longer storage life season after season. Special envelope separators protect all sides of the plates, preventing internal shorting. This Blain's Farm & Fleet Lawn and Garden Battery is great for use with Lawn Mowers.