Whether you need a deep-cycle marine battery, trolling motor batteries, starting boat batteries or a combination of the two, Interstate has you covered with our lineup of high-quality marine batteries.

Interstate deep-cycle marine batteries offer strong, reliable power for your boating needs. Our EFB, SRM and lithium marine batteries can power you on the water.

Interstate lithium dual purpose batteries offer both engine-starting power and deep-cycle capabilities for extended use, making them ideal for a wide range of boating needs.

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Interstate deep-cycle marine batteries offer strong, reliable power for your boating needs. Our EFB, SRM and lithium marine batteries can power you on the water.

Power up your boat with M Line marine batteries from Interstate Batteries. These quality batteries deliver reliable performance on the water.

The Interstate MTX car battery line offers premium performance and long life and includes both the AGM battery or EFB battery you need for your start-stop vehicle, vehicle with many accessories or car or …

Our marine starting batteries come with a 12-month free replacement warranty. Browse the lineup below or try our battery wizard to get a product recommendation for your application.

Interstate’s SRM Deep Cycle batteries offer strong, reliable power for your comforts of home, like cooking appliances and lights, whether the motor is on or off.

Marine/RV When you're ready to head out on the water, make sure you get the most out of your boat or personal watercraft with Interstate marine batteries from Costco.