Energizer marine batteries have been developed to provide cranking and deep-cycle power in an all-weather vibration-resistant design. Featuring lead-calcium plates and dual terminals for flexible installation, these batteries are perfect for marine and recreational applications to keep you having fun. Built to deliver small amounts of current over continuous periods or big cranking power over seconds, they are multipurpose batteries and are durable, strong, and tried-and-tested in harsh marine environments. Feature and Benefits Maintenance-free and fully sealed battery Multipurpose cranking and deep-cycle capabilities Hardened case to withstand knocks and bumps Vibration resistant internals Up to 24 months warranty in starting applications* Premium warranty and built with high-quality components Extra electrolytes, high-density plates, and thicker grids Model Description AH (20HR) RC (MIN) CCA Length Width Max Height (Inc. Terminal) Cell Layout Terminal Type Bottom Hold-Downs EDCM24MF Energizer DCM24MF 520 CCA 82 140 520 275 172 225 Left (+ -) MRN B7 EDCM27MF Energizer DCM27MF 680 CCA 100 162 680 305 172 225 Left (+ -) MRN B7 EDCM31MF Energizer DCM31MF 720 CCA 110 190 720 330 172 234 Center MRN B0 EM24MF Energizer M24MF 580 CCA 65 115 600 259 172 225 Left (+ -) MRN B7 EM27MF Energizer M27MF 630 CCA 90 145 750 306 172 225 Left (+ -) MRN B7