Best Dual Purpose Marine Batteries (2022): Reviews & Comparison

When shopping for a marine battery, you want to find one that is both powerful and long-lasting. In other words, you want to find the best dual-purpose marine battery. The best dual-purpose marine batteries on the market are those that are designed specifically for use in boats and other watercraft. These batteries tend to be more expensive than regular car batteries, but they are worth the investment because they will provide years of reliable power. Marine batteries are also more resistant to vibration and moisture, making them ideal for use in harsh conditions. If you are looking for the best possible marine battery, then continue reading to learn about the top four products on the market.

Odyssey 31M Trolling Thunder Dual Purpose

Odyssey 31M Trolling Thunder Dual Purpose Marine Battery is a powerful, deep cycle battery that offers long run time and superior performance in marine applications. The AGM (Absorbed Glass Mat) design provides superior vibration resistance, while the 100% spillproof construction ensures safe operation.

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05/23/2022 12:51 am GMT

1. Odyssey 31M Trolling Thunder Dual Purpose

CCA: 1150 Amp

Item Weight: 77.8 pounds

Item Descriptions: 16.8 x 11.1 x 11.9 inches LxWxH

Best Features: The Odyssey 31M Trolling Thunder Dual Purpose AGM battery is the best AGM battery to power everything on your fishing boat. It offers excellent reserve power of 205 minutes with a capacity rating of 100 Ah, more than enough to power a fishing boat. The best AGM battery for trolling motor, bilge pump, stereo system, and all other accessories.

Designed with vibration resistance that protects against high-impact shock and mechanical vibration. Built to last and tolerate the extreme temperature. With a 3-10 years lifespan depending on how it's used.

Cons: This battery comes pricey, but it's definitely worth the investment.

2. Optima BlueTop D31M Deep Cycle Battery

CCA: 900 Amp

Item Weight: 59.8 pounds

Item Descriptions: 12.8 x 6.5 x 9.38 inches LxWxH

Best Features: One of the best dual-purpose marine batteries. It can take more recharges than most other marine batteries while also being used for both starting and deep cycle applications, with superior runtime and longer usage. The Optima BlueTop D31M battery features a robust design, is spill-proof, and is adaptable to any position. Excellent resistance to vibration in severe boating situations.

The Optima BlueTop Deep Cycle Marine Battery is a true deep cycle battery that can handle high loads, so you can use it for trolling motors and winches. The battery is also maintenance-free, so you don't have to worry about adding water.

Cons: Shipping of this item might be an issue for some customers. There are chances of getting the batteries damaged.

Optima 8052-161 D31M Deep Cycle Battery

The Optima 8052-161 D31M BlueTop battery is a dual-purpose power source, both starting and deep cycle. This means that it can provide you with sure starts for your boat or RV in harsh conditions no matter what they might be; plus, this unique spiral cell design ensures safety while also ensuring long shelf life by storing more energy than other types of cells on the market today.

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3. Northstar High-Performance AGM 31M Battery

CCA: 1150 Amp

Item Weight: 75.5 pounds

Item Descriptions: 12.8 x 6.5 x 9.38 inches LxWxH

Best Features: This battery is a maintenance-free, non-spillable sealed lead acid battery. It is made with Absorbed Glass Mat (AGM) technology that delivers strong CCA continually and always turns over quickly. This battery is built for extreme conditions and has an excellent discharge rate. 

It's the perfect high-quality replacement for your boat's original equipment or aftermarket starting batteries. 

Cons: The notable downside of this battery is its weight, but that is expected with a high-quality battery such as this one.

Northstar AGM Engine Start Batteries

Looking for a high-quality AGM battery? Northstar has you covered with their advanced AGM 31M battery. This battery is designed for superior performance and cycling ability, delivering 400+ cycles to 80% depth of discharge. It's also quick starting every time, making it perfect for use in a variety of applications. Plus, with its advanced construction, there's no need to check water levels or clean terminals - just install and go!

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4. Trojan 27 Dual Purpose AGM Battery

CCA: 550 Amp

Item Weight: 64 pounds

Item Descriptions: 12 x 6.6 x 8.1 inches LxWxH

Best Features: Trojan's 27-AGM Dual Purpose AGM battery is a high-performance battery that provides exceptional deep cycle capabilities. The Trojan grid technology reduces the risk of corrosion and deterioration of parts.

This battery is designed for use in boats, RVs, cars, trucks, and other vehicles requiring a dual-purpose battery. It has a low self-discharge rate which means it can sit unused for long periods of time without losing its charge.

The AGM design offers superior vibration resistance and is maintenance-free.

Cons: This battery comes in limited variety compared to others. Some of Trojan's competitors have more options available.

Trojan 27 Dual Purpose AGM Battery

Trojan’s 27-AGM Dual Purpose Battery is a high-performance battery that can be used in both your RV and car. The AGM design offers a longer run time than most of their competitors, lowering the operating costs associated with the battery. This battery contains a high-density paste formula that is designed specifically for high-performance batteries.

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What is the best dual purpose marine battery?

The best dual-purpose marine battery is the one that can provide the most power while also being able to withstand the harshest conditions. Some of the best features to look for in a dual-purpose marine battery include high capacity, vibration resistance, and a long lifespan. When it comes to choosing the best dual-purpose marine battery for your needs, it is important to consider what you will be using it for and how often you will need to use it.

What does dual purpose mean on a marine battery?

Dual-purpose marine batteries are designed for use in both starting and deep cycle applications. Starting batteries are designed to provide a large amount of power over a short period of time, while deep cycle batteries are designed to provide a smaller amount of power over a longer period of time. Dual-purpose batteries combine the best features of both types of batteries, making them ideal for use in a wide variety of applications.

How do you charge a dual purpose marine battery?

To charge a dual-purpose marine battery, you will need to use a charger that is specifically designed for marine batteries. You can find these chargers at most marine supply stores. Once you have the charger, simply follow the instructions that come with it. Most chargers will have two settings: one for charging and one for maintenance. Be sure to set the charger to the correct setting before plugging it in.

It is important to note that you should never overcharge your marine battery. Doing so can shorten its lifespan and lead to costly repairs. If you are unsure about how long to charge your battery, consult your owner's manual or a qualified technician.

What type of battery is best for Marine?

There are three types of batteries that are commonly used in marine applications: lead-acid, gel cell, and AGM. Each has its own advantages and disadvantages, so choosing the right one for your needs is important.

Lead-acid batteries are the most economical option, but they require more maintenance than other types of batteries. Gel cell batteries are maintenance-free, but they're more expensive. AGM batteries are the most expensive, but they offer the best performance and longest life.

The type of battery you choose will depend on your budget and your needs. If you don't mind doing a little extra work to keep your battery in good shape, a lead-acid battery may be the best option for you. If you want a battery that will last longer and require less maintenance, an AGM battery may be the better choice.

No matter which type of battery you choose, make sure it's rated for the amount of power you need. A higher capacity battery will last longer and provide more power, but it will also be more expensive. Choose the right battery for your needs and budget, and you'll be able to enjoy your time on the water without worry.


If you're looking for a battery that can do it all, we recommend the dual-purpose marine batteries mentioned in this article. With these batteries, you can rest assured that your boat will start up every time, even on the coldest days. Plus, they offer great value for the money and are backed by a reliable warranty. So if you're ready to make the switch to a better battery, be sure to check out these recommendations.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.