Marine Batteries for Every Type of Boat

Knowing what to look for when selecting the best marine batteries for your boat is critical. They are no small investment so let Impact Battery guide you down the right path to help ensure your long-term success.

Only the best real-world-tested non-spillable AGM and lithium battery brands are stocked. If our seal of approval is not on the battery it will not be sold within our national network.

Yes, we can ship direct to your door or to any facility docking your boat for service and installation.

Popular Group Sizes for 12 Volt Marine Batteries

Boat batteries are divided into group sizes. Each classification is broken down into a physical size characteristic which generally corrasponds to an ranged amp hour rating.

For example, a Group 31 Marine Battery, should be at least 100Ah with some now reaching 130Ah and have a physical dimenssion of about 13 x 7 x 9 (LWH).

Trolling Motor Batteries


Sure, going to Wal-Mart every year to buy a trolling motor battery may work for some people. But not us. Buy a long-lasting dual purpose AGM marine battery or Don't Die series lithium battery instead!

Cranking Batteries


marine cranking battery on a bass fishing boat has requirements that may not be needed on a luxury yacht. What attribute is needed for your boat?

House Boat Deep Cycle Batteries


Larger pleasure cruising boats rely on a marine deep cycle battery to power everything including the kitchen sink. These house batteries need to be different than cranking batteries to give you the result you demand!

AGM Marine Batteries


The Absorbed Glass Matt or AGM battery has been the go to staple for every type of marine application from house deep cycle batteries to engine crank batteries. The best innovation for this type of battery was the dual purpose AGM marine battery. It excells at both cranking and deep cycling.

Lithium Marine Batteries


As the lithium marine battery has become for reliable and less expensive the debate on whether lithium or AGM marine batteries are better could be tipping in a new direction. Discover what Impact Battery recommends.

Marine Battery Chargers


Bass boats, yachts and battery powered kayaks all require a different marine battery charger setup. Multi-bank and waterproof chargers are essential for bass boats, but a kayak could be charged in the garage with a regular single output 12-volt charger.

Cranking Batteries vs. Deep Cycle Batteries

Marine deep cycle batteries used to power stereos and trolling motors, for example, are designed to provide a constant current over an extended period of time. To maintain the ability to supply power over longer periods of time the plates are made thicker. This initiates the deep cycle nature and allows discharge of up to 80% of their capacity routinely. They still have the ability to provide a short but less powerful burst of power compared to a similarly sized engine start battery.

As the name suggests, marine cranking batteries or starting batteries are designed to turn over an engine by providing a high rate of current over a very short time period. These batteries cannot handle continuous load, deep discharge situations. They will leave you wanting and will die a premature death when used for applications other than starting an engine. To achieve the necessary burst of current these batteries need to lower their internal resistance by using thinner lead plates.

Dual Purpose AGM marine batteries try to maximize the Cold Cranking Amps (CCA), Reserve Capacity (RC) and overall Cycle Life. NorthStar and Odyssey batteries are the best in class for dual purpose specs. NorthStar batteries, which use 99.99% pure lead and are considered an ultra-premium AGM marine battery, excel in all three categories making them the market leader in deep cycle and starting power ability. 

Now that you have selected your new battery, you should consider protecting it with a proper charger that will stand up to the harsh marine environment. 

Batteries for

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