Best Battery For Electric Trolling Motor

Introduction to Electric Trolling Motors

Electric trolling motors are an essential accessory for anglers and boating enthusiasts. They provide a quiet and efficient way to maneuver your boat without disturbing the fish or harming the environment. But what makes a trolling motor truly effective is the battery that powers it. In this blog post, we will discuss the best battery options for your electric trolling motor and cover some important factors to consider when making your choice.

Types of Batteries for Trolling Motors

There are three main types of batteries suitable for electric trolling motors:

1. Wet-Cell or Flooded Lead-Acid Batteries

Wet-cell batteries are the most traditional and affordable option, but they do require more maintenance, such as regular topping up with distilled water. These batteries are prone to releasing gas while charging, so proper ventilation is necessary.

2. Absorbed Glass Mat (AGM) Batteries

AGM batteries are a more advanced and maintenance-free option compared to wet-cell batteries. They are more resistant to vibrations, have a longer lifespan, and can handle a faster charge and discharge rate. However, they tend to be more expensive.

3. Lithium-Ion Batteries

Lithium-ion batteries are the newest and most advanced option available for trolling motors. They are lightweight, maintenance-free, and have a long lifespan. They offer high energy density and can handle frequent discharging without losing capacity. The main drawback of lithium-ion batteries is their high initial cost, but they offer long-term savings due to their longevity and efficiency.

Choosing the Best Battery for Your Trolling Motor

Here are some factors to consider when choosing the best battery for your electric trolling motor:

A. Battery Capacity (Amp Hours)

Battery capacity is measured in ampere-hours (Ah) and determines how long the battery can power your trolling motor. A larger capacity battery will provide more power, enabling you to troll for longer periods. Consider the amount of time you plan to use your trolling motor and the level of power you need, then choose a battery with an appropriate capacity.

B. Battery Voltage

The voltage of your trolling motor battery should match the voltage of your motor. Most electric trolling motors are available in 12V, 24V, and 36V options. Ensure you choose a battery with the same voltage as your motor for optimal performance and compatibility.

C. Battery Weight

The weight of the battery is an essential factor to consider, especially if you have a smaller vessel. Lighter batteries, such as lithium-ion choices, can improve your boat's efficiency and prevent it from being weighed down. On the other hand, if weight is not a concern, you might opt for heavier, more affordable options like wet-cell batteries.

D. Charging Time and Cycle Life

Your battery's charging time and cycle life affect the overall usability and lifespan of the battery. Lithium-ion batteries typically charge faster and offer more charge cycles than wet-cell or AGM batteries. If you frequently use your trolling motor and want a longer-lasting battery, consider investing in a lithium-ion option.

E. Budget

Lastly, consider your budget when choosing the best battery for your trolling motor. While lithium-ion batteries are expensive initially, they can save you money in the long run due to their efficiency and longevity. On the other hand, if you have a limited budget, wet-cell or AGM batteries might be more suitable.


The best battery for your electric trolling motor will depend on your specific needs, preferences, and budget. Take the time to evaluate the various options and determine which battery type, capacity, voltage, weight, and charging performance best suits your trolling motor and boating habits. Armed with this knowledge, you'll be one step closer to selecting the perfect battery for your electric trolling motor and enjoying a smooth and efficient fishing experience on the water.

What is the best battery for a trolling motor?

Lithium Iron Phosphate batteries, also referred to as LiFePO4 batteries or lithium marine batteries, boast the longest battery lifespan of any marine or deep-cycle battery. They are the best battery for a trolling motor any boatsman, yachtsman, or angler could want.

How do I choose the right trolling motor battery size for my boat?

To choose the right battery size for your trolling motor, you need to consider the motor's power, boat weight, fishing style, and how long you plan to be on the water. Essentially, you want to find the ideal amp-hour (Ah) capacity to meet your specific needs. A higher Ah rating means a battery can provide a higher amount of energy for a longer time. If you're unsure, check the manufacturer's recommendations for your trolling motor, or consult with an expert in marine batteries for guidance.

Are there any maintenance tips for ensuring the longevity of my trolling motor battery?

Certainly! Here are a few maintenance tips to help extend the life of your trolling motor battery:

  1. Always charge the battery after each use, even if it was only used for a short time.
  2. Avoid overcharging the battery, as it can lead to a shorter lifespan. Make sure to use a smart charger designed for your specific battery type.
  3. Keep the battery terminals clean and free of corrosion to maintain proper conductivity.
  4. Store your battery in a cool, dry place during off-seasons, and consider removing the battery from your boat when not in use for an extended period.
  5. Periodically check the electrolyte level (in lead-acid batteries) and top it off with distilled water as needed.

Can I use a car battery for my trolling motor?

While it's technically possible to use a car battery for your trolling motor, it's not recommended. Car batteries are designed to provide high energy bursts for a short duration (i.e., starting the engine), whereas trolling motors require sustained power delivery. Instead, opt for a deep-cycle marine battery, which is designed to discharge energy slowly over a longer period, making it ideal for use with trolling motors.

How long do trolling motor batteries typically last?

The lifespan of a trolling motor battery largely depends on the type, quality, and how well it's maintained. A lead-acid battery (AGM or flooded) may last between 2-4 years, while a lithium iron phosphate (LiFePO4) battery can last up to 10 years or more. Proper charging, storage, and maintenance practices can significantly extend the battery's life. Make a habit of checking the battery's health regularly to ensure it's in top condition.

How far can I travel with a fully charged trolling motor battery?

The distance you can travel with a trolling motor depends on several factors, including the battery capacity, motor energy efficiency, boat weight, water conditions, and speed. You'll typically get a longer runtime at slower speeds with an energy-efficient motor and a properly sized battery. A ballpark estimate for the range of a fully charged trolling motor battery might be between 10-30 miles; however, this varies significantly based on the factors mentioned above. Always carry a spare battery or have a plan in case you run low on power while out on the water.

The best trolling motor battery provides reliable power and long-lasting performance for your fishing adventures. With exceptional durability and a high amp-hour rating, it ensures a consistent and efficient trolling experience. Look for a battery with deep cycle capabilities and maintenance-free operation, ensuring hassle-free usage on the water. Now get out there and catch some biggins!

Additional Questions

What kind of battery possesses the longest lifespan for a trolling motor?

If you’re looking for a battery with exceptional lifespan for your trolling motor, you should definitely consider a Lithium Iron Phosphate battery. These batteries, also known as LiFePO4 batteries or lithium marine batteries, are well-renowned in the world of marine electronics for their extraordinary longevity. They surpass the lifespan of any other type of marine or deep-cycle battery. From personal experience, I can attest to their reliability and endurance. Nothing quite matches the peace of mind you get from knowing that your angling or boating trip won’t be hampered by battery issues. Truly, lithium marine batteries stand as the pinnacle of trolling motor battery tech.

Which battery should I choose for an electric trolling motor?

When it comes to picking a battery for an electric trolling motor, my prime recommendation would be a 12-volt deep cycle marine battery. But not just any marine battery. Specifically, try and opt for one with an amp hour rating of at least 110. This usually points you towards batteries of Group 27 size or larger. You’ll find the higher amp-hour rating results in a markedly expanded run time for your trolling motor. I’ve seen many fellow boaters benefit immensely from following this simple tip. Your outings on the water will be all the more enjoyable for it.

What’s the top choice battery for a Minn Kota trolling motor?

If you’re a Minn Kota trolling motor owner, my pick for the best battery option might sound familiar. Like with the previous question, I strongly recommend a 12-volt deep cycle marine battery. I’d once again urge you to look for a battery with an amp-hour rating of at least 110. This typically correlates to a group 27 size battery. I can personally swear by this criteria for the robustness and longevity it guarantees in the marine environment. A higher amp-hour rating directly translates to a longer run time, and thus, a better, worry-free boating experience.

How much run time can I expect from a 50 amp-hour battery on a trolling motor?

This is a question that I’ve often helped answer for my fellow anglers. In general, 50 amp-hour models can power your trolling motor and auxiliary devices for an entire day of fishing. However, upgrading to battery models with a capacity of 100Ah can add another full day, with some reporting even longer periods before recharging becomes necessary. I’ve personally used and seen others use these higher capacity battery units and can attest to their superior performance. In essence, you’re guaranteed more extended outings on the water with batteries of this caliber. There’s really no underestimating the value of a reliable power source when it comes to your trolling motor.

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