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Best Deep Cycle Marine Battery for Trolling Motors – Buying Guide

Best Deep Cycle Marine Batteries for Trolling Motors

If you like boating but do not like the idea of paddling to move your boat around, a trolling motor would surely do the job for you. This would help you move with varying speeds which, in return, could improve your fishing. But every trolling motor requires a battery. This could sustain power for hours and could provide power not only to your boats but to your other items as well. However, you would want not just any battery but quality and affordable one.

This article reviews eight products to help you find the best deep cycle marine battery for trolling motor. You would also be guided on what makes a good battery to help you identify the factors to consider when you’re buying one.

Factors to Consider in Buying the Best Deep Cycle Marine Battery

What are the several factors you need to consider when buying a trolling motor battery? In order to save time and money, you need to do a couple of research about these factors, which may include the price, the battery’s brand reputation, and reviews from other customers. We specify all that you need to know about trolling motor batteries to guide you.

Know the Three Types of Trolling Motor Battery

First, you need to know the three types of trolling motor batteries. These are the following:

Absorbed Glass Mat (AGM) –This battery is made out of a glass plate and has a substance that’s somehow the same with gel. Because these types of batteries are entirely enclosed, adding distilled water to them is not necessary. Compared to wet-cell batteries, they can last longer. They can even last up to three to four years. The drawback, however, is that they are more expensive than wet-cells because of this longevity.

Wet-Cell –These types of deep cycle marine batteries are the most basic and the most affordable. They can deal with several and continuous power recharges and drains. They are also very durable. The challenge for you, however, is the maintenance. Wet-cell batteries would usually demand to top off with distilled water. Compared to the absorbed glass mat (AGM), they do not last that long. After a year or two, it might need a replacement.

Lithium-ion – Mostly, these types of batteries are used for smartphones, so they might be quite familiar to you. Bigger lithium-ion batteries are usually used to help power trolling boats. Because of their extensive durability, these types of batteries are quite famous and among the most effective.

This lasts longer than a wet-cell and even with Absorbed Glass Mat (AGM). When stored under a 105-degree temperature, this battery could last for around ten years! This is thrice the lifespan of an AGM battery. Because of this amazing feature though, this type of battery is also very expensive compared to other types.

Other Important Factor to Consider

Now that you know these three types of battery for trolling boats, you might already have an idea about which would suit you best. However, you should know not only the types of batteries but the things you should look for when buying one. Here are some important factors:

Amp Hours (Ah) –This is about the number of amps that your battery draws in every hour. What this indicates is how long the battery would last after a single charge. You would find batteries with different amp hours. When your speed is slow, 35Ah batteries would last around seven hours. 100Ah batteries, on the other hand, could even last for around 20 hours.

You would want to choose that with a higher Ah to make sure that your battery would last long after a single charge, as you won’t be going at slower speeds all the time. Also, getting 12V batteries for the trolling motor could help provide more power.

Battery Lifespan – Like what has been mentioned in the types of batteries, each type has different lifespans and it would be more advantageous if you choose that which would last longer. However, two batteries that are different but are under the same type might have a different lifespan as well. One might last longer than the other.

Checking customer reviews would help you identify what brand could really last long. One tip that would help you choose is also identifying the warranty offered. Usually, longer warranties mean a longer lifespan.

Durability and Vibration Resistance – Traveling over choppy waters (the way most fishing boats do) might cause vibrations that could bother your batteries. There are batteries, however, that are vibration resistant and could withstand this occurrence. Some batteries also have features that improve durability like shock-resistance and is spill-proof.

Size –You need to make sure that your boat size could accommodate the size of the battery. You need to make sure that your boat could also carry the weight of the battery, so you really need to look for the most appropriate size. Small boats may accommodate only up to 40 pounds. Check the dimensions of the battery you’re buying and examine if it fits your boat.

Ease of Use – Because you would need to install your battery on your boat, you need to know if installation instructions are available and are easy to follow. While some batteries can be mounted in any position, there are those that really require a particular set up.

You would also want to know how your battery has to be maintained to make sure that it remains useful.

Versatility – Choose the most versatile one. There are batteries that could power not only your boat but also other gadgets you might be using while you’re on board in your boat. Some batteries may even be useful for other things like motorcycles, jet skis, and even scooters.

Advantages of Having a Battery for Trolling Boat

So, why do you need a battery for your trolling boat anyway? And why does it have to be a deep cycle marine battery? Here are several advantages of having one:

  1. They make your boats go faster
  2. Could sustain power for a long time
  3. They are less likely to overheat
  4. They can be dual purpose
  5. They can withstand different temperatures
  6. They can be recharged many times

Here are the Best Deep Cycle Marine Batteries

This is among the very versatile batteries you could use for both starting and deep cycling operations. Not only can it power up boats, but it can also power RVs that utilizes many electrical accessories. It can last for quite a long time because of its 55 Ah. You can recharge this up to three times before it would completely fail to function. It only needs about 35 minutes to have a 90% charge capacity when used with 100 amps in recharging.

Aside from being incredibly durable, this battery is also resistant to vibrations, so it works best for your trolling boat. Being an AGM battery, this does not need much maintenance. Meaning, you don’t need to put distilled water on it because it is already encased. Being encased also means that the battery is spill-proof and you could mount it in any position, making it very easy to install. It can work under any weather conditions.

Pros

Cons

Because of its high amp hours, you can expect that this battery is very long-lasting no matter how powerful your motor is. When it’s at its lowest speed setting, it could last you up to 12 hours. Even on medium speed, it could go on until around seven hours. At constant full speed, it can last over two hours – which is way longer than other batteries.

The higher AH of this battery makes it bigger than others, measuring around 12 inches in width and 7 inches deep, with around 8 inches in length.

It weighs around 68 pounds, so you need to make sure that your boat can bear this weight. Because this is an AGM battery, expect it to be spill-proof and maintenance-free.

Pros

Cons

This model of Optima batteries can be dual purpose, working both for starting and deep cycle. Because this is an AGM battery, this model is maintenance-free and could last longer. You could also recharge this many times compared to other traditional batteries. This is really resistant to vibration so you don’t need to worry about bringing it on rough waters.

This model of Optima batteries also has a faster recharge time, so you don’t have to wait for too long for it to be useful again.

This measures 12.8 x 6.5 x 9.4 inches and could fit in your typical trolling boat without adding too much weight, being a lightweight marine battery for trolling motor.

Pros

Cons

This is the cheapest you could find but would still work best for you. Its low cost does not prevent it from giving quality service, as this compact battery is considerably small, which could certainly fit your boat. This is also a lightweight deep cycle marine battery. No matter in which temperature you use it – high or low – it could still work over a long period of time. 

Aside from being shock and vibration proof, this battery is also spill-proof, so it is possible to mount it at any angle you desire. It could last around three hours of service when it is at the middle setting.

Pros

Cons

Another cheaper battery with 35AH. This could be great for boating because of leisure and if you don’t want to travel too fast. Its dimensions are enough to fit your boat and it does not weigh so much.

With its compact design, this battery could be used for around six hours although, because its only 35AH, it can’t be used for a long time when at full speed.

Aside from powering trolling boats, however, this battery can also be useful for other devices like wheelchairs or gadgets in RV. Being an AGM battery, Interstate Lead Acid is spill-proof and can be installed at any angle you desire.

Pros

Cons

This battery weighs only 63.93 pounds with dimensions 12.17 x 6.61 x 9.16 inches which could surely be accommodated by your boat of average size. Because this is an AGM battery, it does not really need extensive maintenance, meaning you don’t need to pour it with distilled water from time to time.

This is also spill-proof and can be installed and mounted so easily. Could last for several hours because of its AH.

Pros

Cons

Offering great AH than the other Mighty Max model, this battery could last longer although it’s a bit more expensive. This compact battery weighs only 23.15 pounds, measuring 7.68 x 5.16 x 7.13 inches. Use it for high or low temperature and this battery could still last long. This is among the lightest deep cycle marine batteries you can find.

Resistant to shock and vibration, this battery is spill-proof and easy to install. This requires no maintenance and could be used even in an enclosed setting, as it prevents leakage.

Pros

Cons

Because of the 100 Ah this battery offers, you could expect it to last longer than usual batteries. It could last up to 12 hours when at the lowest speed, 7 hours on medium speed, and even around two hours when used at full speed continuously.

Being a bit bigger, this battery is also heavier and may add considerable weight to your boat. However, this battery is very durable and nonhazardous. This is also easy to install because this is an AGM battery.

Pros

Cons

Final Thoughts

Finding the best deep cycle marine battery for trolling boats is among the most important tasks in boating – whether you’re doing it for leisure or for business. With this, it is important that you choose the appropriate battery. Choose from among the products that we’ve reviewed and seen which of them would help you most.

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Andrew Wilson

Content Creator

Andrew is an avid fishing enthusiast who is passionate about bringing you the most up to date, accurate & understandable information and reviews of fishing gears & accessories, and other related fishing resources.

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