Apex Battery offers a wide selection of deep cycle batteries, starting batteries and dual-purpose batteries for your marine needs. We have premium, sealed, maintenance-free batteries available. If you need help selecting the proper battery for your boat or yacht, see “Choosing A Marine Battery.” We offer a wide selection of deep cycle batteries, starting batteries and dual-purpose batteries and you can choose according to your needs. At Apex Battery, our manufacturing standards ensure stringent quality, safety and performance. Our marine batteries are of premium quality, sealed to perfection so no leakage and totally maintenance-free. If you are in need of any help in the selection of the right marine battery for your needs, call us at 800-921-4349 and we are ready to help. Apex Battery also offers you a 30-day money-back guarantee* and a 1-year warranty. Free shipping for all orders above $50.