The EverStart Maxx 12 Volt Lead Acid Marine/RV Deep Cycle Battery, Group Size 29DC, is designed to power the high electrical demands of your RV and boat (trolling motor, radio, GPS, fish finder, etc). It’s rated at 845 MCA and 114 amp hour. Extend your time on the water with +30 percent more cycling capability and longer battery life. This battery has superior recharge capabilities for lasting performance.