Keeping you Ready for the Road Ahead , the ODYSSEY Performance Group Size 65 Heavy Duty Truck Battery features a thin flat plate design made from 99% pure lead, permitting more plates to be used inside the battery. As a result, you get even more power when you need it. Experience a smooth start while simultaneously and consistently providing power to an expansive amount of on-board accessories. This heavy duty truck battery also features compressed AGM plate separators, providing improved vibration resistance and thus, battery life you can depend on. FleetPride is your First Click in Heavy Duty .