Never Underestimate a Trolling Motor Battery, Choose the Best

Even if you are a novice angler using a trolling motor, it is very important to know how to install a trolling motor battery. In fact, the ability to hold the charge of these batteries is what makes any device handy and compatible for everyone. I know that you guys don’t even care much about choosing the best trolling motor battery. However, I’m pretty sure that you guys can’t live without them.

How do they work?

Honestly, these batteries work just like normal ones, but they are contained a little bit more. Furthermore, they feature some performance boosters, for examples, solid body, bigger grids and compartments, AGM technology and so on.

When it comes to motor batteries, there are a lot of components which can make a whole unit together. There are three main components of a battery such as a cathode, anode, and electrolyte.

Once the charge gets negligible, the battery, you will have to recharge the battery. In details, there are a lot of compartments holding electrolyte in a battery. There might be more compartments or even only one compartment, however, they all depend on the type of the battery.

Cathode and anode are adjusted automatically according to each other in grids. Specifically, the size of the grid will depend on the capacity and other factors. In general, a battery features thick grid size to perform more effectively for deep cycle usage.

Trolling motor battery benefits

Of course, these batteries have a lot of benefits over normal ones and even marine batteries. In general, they are more credible and reliable. Once you own the best trolling motor battery, you can go nearly anywhere without any concern thanks to the heavy duty performance. However, they are quite expensive when compared to marine batters, but they can perform best. Now, let’s take a quick look at their benefits:

Durability and Credibility

Speaking of heavy duty, most other batteries are not durable enough. In details, they are likely to collapse and can be damaged due to how they are used in a boat. The positions where the batteries are installed are different from each other. Therefore, they can get spill or leak.

Durability and Credibility

Image source: Classic AquaSport

The point here is the ability of to absorb vibrations generated from the motor. Normal batteries are not designed to absorb these vibrations. However, trolling motor batteries feature electrically welded cases, and these cases are much better than most others. Hence, they are great in case of rough use and handling.

Deliverance of charge

Normal batteries are not able to deliver charge regularly; there might be some fluctuation. Your motor may require an instant charge to start, and this is what normal batteries fail usually. That’s the main reason why you have to rotate the key a few times to start your motor.

Deliverance of charge

Image source: YouTube

However, if you own a good trolling motor battery, this is no longer a problem. This is because they are designed for heavy duty, providing a charge in different situations. Besides, with these batteries, charging only takes several hours and discharging is likely to occur continuously, more importantly, with lower electricity cost.

Deep cycle

Their ability to easily deliver a full cycle and then attain full charge again is the exact feature which set them apart from normal ones. Most batteries out there are prone to getting blast off or heat up because of the pressure inside.

Keep in mind that a battery with a good deep cycle performance can last longer, provide more power as well as be durable. In details, deep cycle batteries feature broader grid system inside compared to other normal ones. This will help increase their performance as well as efficiency. Moreover, a deep cycle battery is also a good choice in case of tougher situations.

How much does a battery cost?

To be honest, the price of trolling motors is very reasonable so you guys can purchase them without any hesitation. On the other hand, the cost of these batteries varies from a brand to another, ranging from $65 to $120. This unique price range will help you choose the most effective and best trolling motor battery within your budget.

In fact, if you are willing to save money and want the unique performance, just choose the deep cycle batteries. In details, these are specialized batteries have the ability to do many different heavy duty jobs, and more importantly, without overheating. This is because a deep cycle motor battery features a heatproof design which offers perfect cooling. Therefore, it can stay cool in every circumstance.

The Differences between Wet-Cell, AGM and Gel Trolling Motor Batteries

Wet-Cell/Flood-cell AGM Gel
Advantages ·         Filled with battery acid and lead plates

·         Containing a liquid mixture of sulfuric acid and distilled water

·         Capable of 1000 discharge cycles


·         Cheapest

·         No leak of electrons

·         Filled with absorbent glass matting


·         Can replenish water supply through a chemical process

·         No maintenance needed

·         No need for refilling, spilling or storing




·         Can replenish water supply through a chemical process

·         No maintenance needed

·         Gelled with silicates

·         Filled with liquid electrolyte

·         low-temperatures tolerant

·         Maintenance free

·         Shock/vibration resistant

·         Can be stored for a long time

·         Excelling in low discharge rate




Disadvantages ·         Often vented, releasing hydrogen gas

·         Likely to spill acid if it is highly corrosive

·         More fragile

·         Quite expensive

·         Heavier

·         Hard to replace the water as the unit is sealed

The most expensive

May suffer premature failure if not recharged correctly

Special regulator required



How to choose the best battery for trolling motor


Electric trolling motors need battery power to propel a boat. The amount of power or strength to move through the water is called “pounds of thrust.” This power rating is common to every motor on the market and one of the most important factors to consider if you want to choose the right battery.

Remember that with inadequate power, it will be impossible for you to get your boat through weedy conditions, the wind and high waves. The thrust of a trolling motor plays a very important part when it comes to choosing the right battery.

Boat size and weight

These are two additional significant factors you also need to take into consideration. The bigger your boat is, the more thrust it should have, thus, the more power is needed. However, the more power does not mean your battery has to be heavy and big.

Considering the area on the boat for a battery is important. If there is not much space, then you need to buy a small-sized battery. Additionally, it’s not a good idea to add a heavy weight to your boat if it’s already heavy. Or else, it will slow down your boat.

Boat size and weight

Image source: Best Marine Battery

However, for a small boat with less space, an AGM battery is not a good choice as it needs long-lasting mounting on there. Hence, an ordinary deep cycle marine battery is preferred in this case.

Other factors

Fishing conditions

In general, there are two common fishing conditions, low water fishing, and deep water fishing. For low water fishing, you will not need much power. However, with regards to deep water condition, then a high amount of power will be required. Thus, for deep water fishing, it is essential for you to use a battery with a high amp hour rating.

Weather conditions

These are also another important factor to consider. The weather and water can disturb the performance and run time of a battery. Overall, a trolling motor can draw 40 amps in bad and windy weather although it usually draws 30 amps at an average speed in good weather. That’s why if you are going to go fishing in bad weather conditions, then consider this factor thoroughly before buying a trolling motor battery.

Weather conditions

Image source: Dreamatico


Some batteries like wet batteries require a lot of care and maintenance. For examples, they frequently need inspection for the acid spill, opportune refilling of distilled water or occasional rust check and so on. However, some batteries like AGM, gel and lithium-ion batteries don’t need much care and maintenance. But keep in mind that whatever your battery is, the better you maintain it, the longer it can last.

Battery price

You may think that this is not an important aspect of choosing the right battery, but it’s wrong. This is because of there different batteries available on the market coming in a wide range of prices. In fact, it’s not a bad idea to buy an in expensive battery to reduce cost. However, don’t forget that a cheap one is likely to be disastrous because of leaking o acids.

On the other hand, it is not always necessary to go for a costly battery. The point is you have to choose one which can meet your needs and fit into your budget. Honestly, the permanence of a battery primarily depends on your maintenance and attention.

Best trolling motor battery reviews:

1.MinnKota Trolling Motor Power Center

This battery is quite lightweight because it is only about 1 pound. Therefore, it is a perfect choice almost all types of small boats without any additional chamber. This will store the battery very securely and save space for your current boating.

Besides, this product features a unique design that helps you access the terminal easily. Furthermore, with this product, you can connect to the charger leads and the motor leads without having to open the box.

However, the downside of this product is that the case design is not very efficient though the plastic quality is quite reliable. After loading this battery into the boat, you will know how to lock the strap of the web by reading the instructions. But, remember that the strap has a buckle system that is not idea to carry a heavy object.


  • Suitable for small-boat transom applications
  • Provides an easy-access to terminals to connect leads
  • Built-in battery meter displaying current charge state
  • Fits up to 24 and 27 size batteries
  • A couple of manual reset circuit breakers and 12-volt plugs and


  • Some complaints about the case being not durable
  • The battery meter may not last long.

2.Optima Batteries 8016-103-FFP D34M BlueTop Starting and marine deep cycle battery

This maintenance-free and sealed marine battery can meet your needs. And more importantly, you don’t have to worry about the explosion of leaked gasses. As long as this battery is not overcharged, you can withhold and manage the gasses, depending on the recombination technology.

If your boat is quite small and you have to manage the space in there, this is a perfect choice for you. This is because this battery is compact and small enough to use small spaces. Furthermore, it is also light weight, therefore, never overloading your boat.

Another reason why this trolling motor battery is a good choice is that it is a dual-purpose battery. Specifically, you can use this one to crank the trolling motor any time. This battery is both powerful and able to recharge very fast, that is the reason why many choose it.


  • Suffers less damage when overcharged
  • Lasts long if well maintained
  • Totally affordable
  • Flooded battery, lasting long even with deep discharges
  • Light and more efficient
  • Charges up quickly, up to 90% within 30 minutes


  • Can overheat if overcharged
  • Can’t withstand excessive vibrations
  • The valve will open to let out excess gasses if overcharged
  • You can’t add distilled water as it’s sealed.

3.VMAXTANKS Vmax857 Tm AGM 12 Volt 35AH Group U1 Marine Deep Cycle Hi Battery

This deep cycle RV battery has the ability from its physical structure and internal chemical. In details, the physical strength and chemical balance of the electrolyte and cell plates set this one apart from other ordinary batteries.

Additionally, it only weighs 25 lbs, and this is light enough for your motor. With a normal voltage of 12, this product is a good choice for operating your motor effectively. Also, this battery can work continuously for hours while it’s recharging a current of 35A every hour.

Besides, this product features a CCA of 300. That means you can completely use it to crank to start your motor at 300A for only 30 seconds. This is especially essential when you are going to work during the winter. Moreover, the battery is shock resistant, so you don’t need to maintain, add water or check the gravity of the electrolyte.


  • Lightweight
  • Charges fast
  • No maintenance needed
  • Vibration resistant


  • Costs a bit more than a normal one
  • A special charger required
  • Impossible to check the internals.

4.Sealed Lead Acid (AGM) Deep Cycle Battery - DCM0035 replacement battery

This battery is a maintenance free model, so you don’t need to add distilled water or worry about the electrolyte level. Also, you don’t even have to use this one in a well-ventilated area. The gasses are recombined to ensure that the electrolyte of the battery is recycled.

Besides, this battery is well sealed. Therefore, there is no risk of spillage of electrolyte and explosion of leak gasses. The product is made up of a low-calcium grid alloy promoting 99% hydrogen and oxygen recombination rate. Specifically, this technology is why this one can last much longer as compared to lead acid batteries.

This battery is rated 35Ah at a 20-hour rate. Hence, it can work continuously for 20 hours as long as the discharge is 35 amp or less. In another word, you can have a whole night trolling without having to go back to recharge the battery. Honestly, if you have a few of these batteries, whatever type of your motor is, you can easily match the needs of power.


  • Totally affordable
  • Removable handles
  • Maintenance free
  • Dual purpose unit
  • Shock and vibration resistant
  • A flame-arresting capability
  • AGM technology


  • A bit heavy and bulky
  • Does not operate effectively in cold conditions
  • Only best suited to warm conditions.

5.12V 55Ah Power Boat Pontoon Electric Trolling Motor Deep Cycle Battery - Mighty Max Battery brand product

The first thing I love about this product is that it is a maintenance-free battery. That’s why you don’t need to worry about the level of electrolyte or add distilled water. Besides, this battery is rechargeable anywhere. It features heavy-duty and calcium-alloy grid providing exceptional service and performance in both cyclic applications and float.

Furthermore, this one is also resistant to heavy vibrations as well as shocks. Thus, it’s very durable. Additionally,  It can last long with high performance in both low and high temperatures. This ML55-12 is an AGM technology coming with a valve regulated design. Therefore, you can use it in indoor and enclosed environments without maintenance and leaking.

With the voltage of 12, you can use this unit various applications such as electric vehicles, consumer electronics, and so many other tools.


  • Rechargeable
  • Maintenance-free
  • High discharge rate
  • Wide operating temperatures
  • Long service life
  • Deep discharge recovery
  • Can be mounted anywhere
  • Shock and vibration resistant.


  • Quite heavy and bulky

Battery and Trolling motor maintenance Tips

Exterior cleaning

It is very important to keep the motor free of weeds and dirt. This will help it run smoothly. When you wash your motor, remember to make sure that it’s fitted to your boat to keep it from falling. After that, tighten any loose bolt and screw on your boat.

You should also wipe the exterior with a mild soap and water solution. Besides, you’d better clear any dirt which is trapped in the unit’s moving parts. Once the motor is dry, check the shaft for any sign of damage and wear.

Prop analysis

It is obvious that propellers are durable. However, they are not indestructible because hard surfaces can damage them. In details, prop wear, dings, and chips can completely damage the function of your trolling motor.

Therefore, you have to adjust the motor depth, depending on the situation to avoid impact and obstacles. Then analyze the prop for fishing line or weeds after using the motor for 20 hours. Remember to check if the prop nut is secure enough or not.

Electric parts cleaning

You have to analyze the battery and electric wiring frequently. It’s essential to replace unraveling electrical tape and worn or frayed wiring. Always make sure that the trolling motor battery is fully charged.

Besides that, analyze every terminal and wash them thoroughly using a battery wire brush which you can easily find at any hardware store. Also, don’t forget to disconnect all the wire connections while you’re charging the battery.

Final thoughts

As you can see, there are quite a lot of things to consider when it comes to trolling motor battery and how to choose the best one. Therefore, if you already have a motor but don’t know anything about these batteries, reading this article will help you figure out what to do. That’s it. Hope you guys enjoyed my article and found it helpful for your boating.