MK Battery ES40-12 Marine (12V, 45AH) Although a wet/acid design is initially less expensive and can provide about10% more running time per charge than a sealed battery of equal size, a Wetlead/acid battery has a much shorter service life, requires regular maintenanceand poses a much higher safety risk because of potential battery acid contactand/or explosion. Our sealed battery, instead, provides an inherently safer,truly maintenance-free design. Our batteries provide a significantly longer life-averaging1 to 2 years or . . . Although a wet/acid design is initially less expensive and can provide about10% more running time per charge than a sealed battery of equal size, a Wetlead/acid battery has a much shorter service life, requires regular maintenanceand poses a much higher safety risk because of potential battery acid contactand/or explosion. Our sealed battery, instead, provides an inherently safer,truly maintenance-free design. Our batteries provide a significantly longer life-averaging1 to 2 years or longer when properly maintained. Our batteries are availablein models approved by major airlines and other public transportation providers. 31.04 12 45 7.79 6.54 6.73 1 Year SLA 1-2 days MK Battery Yes http://site.apexbattery.com/logos/mk battery.jpg New F4 / 10 M