Outfit your vehicle to be Ready for the Road Ahead with a reliable battery that powers your components all year round, with the Deka Group Size 31P Heavy Duty Commercial Flooded Battery. Thanks to its deep-pocket envelope separators and anchor locks that protect the plates from shorts and vibrations, this replacement battery for semis is well-suited for rough and bumpy roads. Crafted with heavy duty and rugged materials to efficiently hold a charge, jump start other vehicles, and keep your vehicle running its best in all types of weather conditions. FleetPride is your First Click in Heavy Duty .