Centennial RV/Marine Batteries have the extra strength to crank up the largest power plants, and the lasting deep cycle capacity to keep your trolling motors, fish finders, RV comforts and accessories running strong with power to spare. Our deep cycle marine and RV batteries are the prime choice for getting you out to deep waters, and making it back, or for powering your RV for any adventure or road trip. Most sizes are available maintenance free! NEVER ADD WATER!