Adventure Power Group 27 Gel RV Gel battery's electrolyte is suspended in a silicia-based gel, which produces a thick pasty material. The state-of-the-art lead-acid battery is the valve-regulatedtype (sometimes called "sealed" or maintenance-free), which fixes theacid electrolyte in a gel or in an absorptive fiberglass mat. The advantage ofthis design is that the battery needs no water additions, can be operated inany position, and can be used in close proximity to people and sensitive equipment. Addit. . . Gel battery's electrolyte is suspended in a silicia-based gel, which produces a thick pasty material. The state-of-the-art lead-acid battery is the valve-regulatedtype (sometimes called "sealed" or maintenance-free), which fixes theacid electrolyte in a gel or in an absorptive fiberglass mat. The advantage ofthis design is that the battery needs no water additions, can be operated inany position, and can be used in close proximity to people and sensitive equipment. Additionalbenefits: maintenance-free, sealed no-leak design, higher cranking amps, lowerself discharge, greater vibration resistance, heavy duty, no-corrosion terminals. 61.67 12 90 12.05 6.61 8.46 1 Year SLA Gel Universal Power Group Yes http://site.apexbattery.com/logos/adventure power.jpg 806593458736 New Z U