Odyssey PC625 Marine Odyssey (Drycell) batteries are military grade batteries and have endured rigorous tests that demonstrate their overall ruggedness and exceptional tolerance of mechanical abuse. The Odyssey battery offers higher cranking amps and additional reserve capacity as compared to the stock battery. Adding water is a thing of the past, and corrosion will cease to exist. A couple of other great attributes are vibration resistance and low internal discharge rate, thus offering physical endura. . . Odyssey (Drycell) batteries are military grade batteries and have endured rigorous tests that demonstrate their overall ruggedness and exceptional tolerance of mechanical abuse. The Odyssey battery offers higher cranking amps and additional reserve capacity as compared to the stock battery. Adding water is a thing of the past, and corrosion will cease to exist. A couple of other great attributes are vibration resistance and low internal discharge rate, thus offering physical endurance and superior off-season storage potential. A life span of 5 plus years can be expected if the Odyssey is fully charged and stored in the non-use season. An unbelievable 2 year warranty is standard on this Made in the USA battery Odyssey Maintenance Free Drycell Battery Maintenance Free Sealed design No liquid Zero corrosion Absorbed glass mat technology Exceptional heat and vibration resistance Very low self-discharge rate Extremely High Cranking Amps Extra heavy duty terminal design 2 Year Warranty 13.2 12 17 265 6.7 3.9 6.89 36 Months Full Warranty Rugged Drycell Sealed Design Odyssey Batteries/Enersys Yes http://site.apexbattery.com/logos/odyssey.jpg New M6 Stud J