Marine Batteries

Marine starting batteries (or cranking batteries) are just like the battery you have in your car. Their purpose is to give a burst of power to your engine when you start your boat. Once the engine starts, the alternator takes over to provide power and recharge the battery.

Starting batteries are perfect for getting your boat going. Still, they cannot handle continuous or frequent discharge/recharge cycles. Therefore, it should not be used for trolling motors or powering accessories. Draining a starting marine battery can shorten its lifespan.

Whether sailing the ocean or ripping it up in a motorboat, Interstate has a wide selection of powerful marine starting batteries built to withstand the most rugged marine conditions. Our marine starting batteries come with a 12-month free replacement warranty.

Marine deep-cycle batteries are perfect for powering your trolling motor and other accessories for extended periods. Unlike starting batteries, deep-cycle batteries are built with thick plates that allow the battery to discharge power continuously. Deep-cycle batteries can be drained and recharged many times over.

Our marine deep-cycle batteries are the most popular line of marine batteries and offer robust and reliable power. Designed to provide reliable power over an extended period, our deep cycle batteries are ideal for powering your boat and all of its accessories, whether your engine is running or not. Our new marine enhanced flooded batteries (EFBs) come with a 24-month free replacement warranty.

A dual-purpose marine battery offers you all the cranking power of a traditional starting battery plus the continuous discharge of a deep-cycle battery. It is ideal for smaller vessels that lack room for two separate batteries.

Initially developed for military tanks and submarines, our marine absorbed glass-mat (AGM) battery with Pure Matrix® power packs the staying power of our best deep-cycle battery with the high-cranking performance your boat needs. With pure, non-alloy lead and the most efficient plate design in the industry, this battery puts the most advanced technology on your side. With faster recharging and two times the overall life of a flooded deep cycle battery, the Pure Matrix AGM stays ready for all your fishing weekends.

We are so confident in our Interstate marine Pure Matrix AGM battery that we back it with a three-year free replacement warranty.

When it comes to affordable power on the water, the Interstate Batteries M Line is sure to have the right marine battery for you. These marine batteries deliver the reliable power you'd expect from Interstate. And they're backed by the quality and service you've grown to love—all at a price you can enjoy.

Get the right power and right price with M Line marine starting and deep-cycle batteries. M Line batteries are available at select Interstate dealers.

Ask your local dealer about Interstate marine batteries today. Let them help you find the correct battery for your boat or watercraft.