Equip your vehicle to be Ready for the Road Ahead , with the Deka Group Size 31 Heavy Duty Commercial Flooded Battery, a reliable battery that powers your components all year round. Due to its anchor-locked elements and deep-pocket envelope separators that protect the plates from shorts, this replacement battery for semis is well-suited to handle vibrations and bumpy conditions. Constructed with solid and heavy duty materials to effectively hold a charge, jump start other vehicles, and keep your vehicle running its best in any type of weather condition. FleetPride is your First Click in Heavy Duty .