The Deka Group Size 31 Heavy Duty Commercial Flooded Battery is the perfect choice for commercial truck applications. This 12V battery features anchor lock elements secured to the bottom of the case to resist the damaging effects of pounding vibration. The maintenance free flush covers make installation, replacement, and cleaning easy. The deep pocket envelope separators protect plates from shorts and extend battery life. This popular group 31 size fits most commercial truck applications for reliable performance and long-lasting durability. FleetPride is your First Click in Heavy Duty®.