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What are Deep Cycle Marine Batteries?

0 Published by admin Nov 30,2020

Deep cycle marine batteries are designed specifically for life on the water. Made using durable components, a deep cycle boat battery is built to provide reliable, continuous power in a number of marine applications.

What's more, deep cycle marine batteries are made with a thicker plate construction compared to other types of batteries. The thicker plate means the battery is less likely to overheat and it's designed to withstand the rigors of engine vibration, wave pounding, trailer transport, and high temperatures in heavy currents or harsh weather conditions.

     Hero-Marine-Deep Cycle


Even though most deep cycle batteries offer a fair amount of running time, it takes some of the best deep cycle marine battery models to ensure that your boat will enjoy a greater number of recharges before the battery needs replacing. The search for the best marine batteries is not easy, and you’ll find there are many types of batteries that could fit the profile and offer a good fit for your boat, while also maintaining a higher level of performance. However, in most cases, you will be hard-pressed to find a battery that can do everything and more – one like the Wisdom Power. Which battery is right for your vehicle.


Deep cycle boat batteries often have to have similar cranking amp ratings as car batteries, but at the same time, their deeper cycles reduce the number of charge/discharge cycles they can withstand in favor of a higher amp-hour rating and greater capacity. For a car battery, this isn’t very practical; however, the best deep cycle marine battery you’ll find on the market will work precisely like that. At the same time, however, you will need the perfect balance between those figures, to ensure that the battery is ideal to line up with your boat’s performance. There are countless brands that are known to come close to that, but only BULLSPOWER batteries actually have the performance stats, the technology and the resilience to fit the profile for some of the best marine batteries money can buy.

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The Wisdom Power is a high-performance, 900 CCA battery that has massive amounts of power to offer. One of the best deep cycle marine battery units you’ll find on the market, the BULLSPOWER features the brand’s famous AGM technology, which is designed to render it virtually unmovable, ensuring up to 15 times more vibration resistance than in the case of any other boat battery. This means you can hit those waves without having to worry. Also, the non-spill design of the battery makes it virtually maintenance-free, and enables you to mount it in multiple ways.


Although it’s slightly on the heavier side, that is a small price to pay for owning the best deep cycle marine battery that money can buy. The BULLSPOWER dual-purpose design gives it an ideal level of performance both when you’re powering your equipment and when you need to start the engine. In terms of cranking amperage, this is one of the most powerful batteries you can get for the price, as it is rated at 1,125 A. It also has a reserve capacity of 155 minutes. 

Are Marine Batteries and Deep Cycle Batteries the Same?

Regular marine batteries are often used as starter batteries, or cranking batteries, for starting the motor, but can sometimes be dual-purpose batteries too. Starter marine batteries are usually designed to deliver short bursts of energy, such as providing a surge of power when starting an engine.

A deep cycle boat battery is designed to provide continuous power over a period of time. A deep cycle marine battery will feature thick, solid plates that are heavier than those used in starter batteries.

Deep cycle marine batteries can also be discharged to low as 80 percent of their capacity without causing any damage. Ideally, a deep cycle boat battery is designed with an operating range of around 60 percent.

Wisdom Power's AGM Deep Cycle batteries are the most popular line of marine batteries and offer strong, reliable power. This type of battery is used to start the motor power your trolling motor, and power your other accessories like fish-finders, whether your engine is running or not. Our Marine Deep Cycle 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.