Choosing the Best Trolling Motor Battery in 2024

Choosing the best battery for trolling motor is crucial for ensuring that your boat performs well on the water. Whether you’re a weekend angler or a boating enthusiast, this guide is here to help you. With so many options available, it’s essential to understand the benefits and drawbacks of different batteries to make an informed decision. This guide will walk you through top battery choices, providing you with the reassurance that you will find the perfect match for your trolling motor needs.

Choosing the Right Trolling Motor Battery

When selecting a trolling motor battery, you must understand the type of battery you need to ensure long-lasting performance on the water. The key is to choose a deep cycle trolling motor battery explicitly designed for this purpose, a choice that will give you confidence in its enduring performance. This reassurance comes from knowing that a deep cycle battery is the right choice for your trolling motor, ensuring you can enjoy uninterrupted use on the water.

Why Deep Cycle Batteries?

Unlike standard cranking batteries, deep cycle batteries are engineered to be discharged and recharged repeatedly. This unique feature makes them ideal for applications where steady, reliable power is necessary over extended periods, such as trolling motor use.

For example, when you use your trolling motor throughout the day, the battery must deliver consistent power without running out too quickly. A deep cycle battery is built to manage this demand, ensuring you can keep your motor running longer without interruption. This feature is essential when out on a lake or river, far from a charging station.

Battery Options

When it comes to deep cycle trolling motor batteries, there are two main options: lead-acid and lithium-ion. While more affordable, lead-acid batteries require more maintenance and shorter lifespans. On the other hand, lithium-ion batteries, such as those made from LiFePO4, offer a longer lifespan, lighter weight, and more reliable performance, but they tend to be more expensive.

It’s important to note that while many lithium batteries are not explicitly labeled as “deep cycle,” they are inherently designed for deep cycling, making them suitable for trolling motors.

Making the Right Choice

When it comes to selecting the best battery for trolling motor applications, understanding the specific requirements of your trolling motor is key. Factors like voltage and amp-hour capacity should be carefully considered. For instance, a 12v trolling motor battery might be perfect for smaller boats, striking a balance between power and size. This balance ensures that you have the necessary power without compromising on the size of the battery, giving you confidence in your decision. It’s crucial to ensure that the battery you choose is clearly marked as a deep cycle, as this guarantees it can handle the repeated draining and recharging cycles without losing its efficiency. This understanding empowers you to make the right choice for your needs.

Types of Trolling Motor Batteries

Understanding the various types available is crucial for making the right choice when selecting a trolling motor battery. The three most common types are Flooded Lead-Acid, AGM (Absorbed Glass Mat), and Lithium Iron Phosphate (LiFePO4) batteries. Each offers distinct advantages and disadvantages, making it essential to choose the one that best suits your specific boating needs.

Flooded Lead-Acid Batteries

Flooded Lead-Acid batteries are a traditional and popular choice for deep cycle batteries for trolling motor setups. These batteries use lead plates immersed in an electrolyte solution to generate power. They are widely available and generally inexpensive, often priced around $100 or less. While they do require regular maintenance, such as checking and refilling the electrolyte levels with distilled water, with proper care, these batteries can last anywhere from two to three years. This makes them a dependable and affordable option for boaters looking for a reliable solution.

AGM Batteries

AGM, or Absorbed Glass Mat, batteries offer a modern, hassle-free alternative to traditional lead-acid batteries. AGM batteries are sealed and do not require maintenance, unlike their flooded counterparts, making them more convenient and safer. They are designed to be spill-proof and are less prone to damage from deep discharges. AGM batteries typically last longer than flooded lead-acid batteries, though they come at a higher cost—often twice as much. For those who prioritize durability and ease of use, AGM batteries are an excellent choice for deep cycle trolling motor battery needs.

Lithium Iron Phosphate (LiFePO4) Batteries

Lithium Iron Phosphate, or LiFePO4 batteries, represent the latest advancement in battery technology for trolling motors. These batteries are lightweight, have an extended lifespan, and provide consistent power output. Although they are the most expensive option, the investment can be justified by their long-term benefits, such as a lifespan of up to 10 years and reduced weight, which can improve boat performance. Before making this upgrade, it’s important to ensure compatibility between your trolling motor and lithium battery system, as not all trolling motors and chargers are designed to work with lithium batteries. However, the long-term benefits of LiFePO4 batteries make them a confident investment for boaters seeking top performance.

Selecting the Right Trolling Motor Battery

Choosing the best trolling motor battery for your boat can seem overwhelming, but the process becomes much simpler with the correct information. Below are vital factors to consider when making your selection.

Battery Type and Group Size

• Battery Types:
  • Wet Cell (Flooded Lead-Acid): Budget-friendly, requires regular maintenance, and typically lasts 2-3 years.
  • AGM (Absorbed Glass Mat): Maintenance-free, sealed, spill-proof, and more durable than Wet Cell batteries.
  • Lithium Iron Phosphate (LiFePO4): It is lightweight and long-lasting (up to 10 years). It has a higher initial cost but lower long-term expenses.
• Group Size:
  • Choose Group 27 or larger for most trolling motors.
  • Larger group sizes generally provide more power capacity and longer run times.
  • Group Size Table:

Battery Group Size	Length (inches)	Width (inches)	Height (inches)
24	10.25	6.81	8.87
27	12.06	6.81	8.75
31	13	6.72	9.44

Battery Capacity and Performance

• Amp-Hour Rating:
  • A 12v trolling motor battery with at least 110 Ah is recommended for most applications.
  • Higher amp-hour ratings result in longer operating times.
• Reserve Capacity:
  • If the amp-hour rating isn’t provided, look for a deep cycle battery with a minimum reserve capacity of 180 minutes.

Importance of Deep Cycle Batteries

• Deep Cycle Batteries:
  • It is essential for trolling motors because they provide consistent power over extended periods.
  • It is necessary to avoid damaging the battery with frequent deep discharges.
• Cranking Batteries:
  • They are designed for short, powerful bursts to start engines.
  • Not suitable for sustained use in trolling motors.

Key Considerations

• Budget:
  • When assessing how much you’re willing to spend, consider the long-term value of higher-quality batteries. While they may be more expensive upfront, they often offer better long-term value by lasting longer, potentially saving you money on replacements. Consider the total cost of ownership, including potential savings from fewer replacements.
• Technology:
  • Wet Cell, AGM, and Lithium batteries each offer unique benefits and drawbacks.
  • Lithium batteries are lighter and more efficient, which can improve your boat’s speed and handling.
• Size/Weight:
  • Ensuring your boat can comfortably accommodate the battery’s size and weight is crucial. Lithium batteries are often the best choice for weight-sensitive boats like kayaks due to their reduced weight, enhancing your boating experience.
• Warranty:
  • Look for a battery with a strong warranty, preferably with easy and quick replacement options.
  • Consider whether replacements are available locally or if they require shipping, which could delay your boating plans.

Following these guidelines, you can confidently select the correct battery for trolling motor use, ensuring reliable and efficient performance whenever you head out on the water.

8 Best Battery for Trolling Motor

When choosing the best battery for trolling motor use, it’s important to consider durability, performance, and value. Here are 8 top picks that cater to different needs, including an overall best choice from MANLY Battery.

MANLY 12V 100Ah Deep Cycle Lithium Battery

The MANLY 12V 100Ah Lithium Battery is a top-tier choice for those seeking a powerful, long-lasting deep cycle battery for trolling motor use. This battery offers an impressive 6,000+ cycles, significantly outlasting traditional lead-acid batteries. With advanced safety features such as short circuit, overcharge, and over-discharge protection, the MANLY battery ensures reliable performance in various applications, from RVs to solar setups. The battery management system (BMS) further enhances its safety and efficiency by providing real-time monitoring and protection. Moreover, it’s lightweight and easy to install, making it an excellent plug-and-play replacement for similarly sized lead-acid batteries. With up to 4P4S connections, you can expand its capacity to meet even the most demanding energy needs.

PROS:

• Exceptional lifespan with over 6,000 cycles.
• Advanced BMS for safety and efficiency.
• Lightweight and easy to install.

CONS:

• Higher upfront cost compared to AGM batteries.
• Requires proper handling for maximum longevity.

Renogy 12V 100Ah LiFePO4 Deep Cycle Lithium Battery

The Renogy 12V 100Ah LiFePO4 battery, a robust and durable option, is designed to handle various conditions, making you feel adaptable and prepared. Built with advanced lithium iron phosphate technology, this battery delivers over 4,000 charge cycles, making it a long-lasting investment. The battery is designed to handle continuous discharge currents of 100 amps and operates efficiently across a wide range of temperatures, ensuring consistent performance in various environments. Additionally, its integrated Battery Management System (BMS) offers protection against overcharging and overheating and helps maintain balanced voltage across all cells. The battery also features an activation switch for low self-discharge mode, which helps preserve the battery’s charge when not in use. With RS-485 communication ports, you can monitor the battery’s status in real time using the Renogy DC Home app.

PROS:

• Over 4,000 charge cycles for an extended lifespan.
• High-performance BMS for enhanced safety.
• Wide operating temperature range for versatility.
• Low self-discharge rate preserves charge during storage.

CONS:

• Higher upfront cost compared to traditional batteries.
• Requires specific charging and monitoring equipment.

Dakota Lithium 12V 54Ah LiFePO4 Deep Cycle Battery

The Dakota Lithium 12V 54Ah LiFePO4 battery, a lightweight and efficient choice, offers a long lifespan, providing you with reassurance and confidence in your investment. This battery offers over 2,000 charge cycles and an 11-year warranty, showcasing its durability and the company’s confidence in its product. The Dakota Lithium battery provides 100% discharge capacity, meaning you can use its power without worrying about damaging the battery. It charges quickly and efficiently, reducing downtime before your next fishing trip. The battery is also designed to be lightweight, making it easier to handle during loading and unloading. Additionally, the built-in BMS protects the battery against low and high voltage, short circuits, and temperature fluctuations.

PROS:

• Lightweight and easy to transport.
• Long lifespan with over 2,000 charge cycles.
• Fast charging capability minimizes downtime.
• 11-year warranty for peace of mind.

CONS:

• Lower capacity (54Ah) may not be suitable for extended high-power use.
• Higher price point compared to similar capacity batteries.

Weize 12V 100AH Deep Cycle AGM SLA VRLA Battery

The Weize 12V 100AH Deep Cycle AGM SLA VRLA Battery is a dependable and versatile option for anyone needing a solid deep cycle trolling motor battery. This battery, weighing 27.6 kg, is fully sealed and requires no maintenance, making it convenient and safe. It’s designed to prevent spills and is not limited to just powering trolling motors; it can also be used for wheelchairs, lawn and garden equipment, and even in healthcare settings. The battery’s AGM (Absorbed Glass Mat) technology enhances its durability, helping to protect it from overheating and vibration, extending its lifespan. Additionally, the valve-regulated design ensures it’s leak-proof and free of gas emissions, making it a safer choice for various applications. With a low self-discharge rate of approximately 40% per year, this battery can remain idle for an extended period and perform when needed.

PROS:

• Sealed and maintenance-free, minimizing hassle.
• Versatile uses beyond just trolling motors.
• Built to resist overheating and vibration for a longer lifespan.

CONS:

• Heavier than many lithium battery alternatives.
• Proper installation is necessary to secure it.

Interstate 12V DCM0035

The Interstate 12V DCM0035 offers a budget-friendly solution without compromising reliability, making it a great choice for a 12v trolling motor battery. It uses AGM construction, which makes it spill-proof and reduces the need for regular maintenance. While it may not have the advanced features of more expensive options, it provides consistent power and is compatible with a wide range of chargers. Although this battery is a bit heavier than lithium options, it’s significantly more affordable, making it ideal for those who want to save money while still getting dependable performance. Its compact size makes it perfect for smaller boats and kayaks, and its proven durability means it can handle the rigors of frequent use, ensuring you get the most out of your investment.

PROS:

• Cost-effective without sacrificing quality.
• Reliable performance that’s easy to find in stores.
• Sealed design to prevent spills, enhancing safety.

CONS:

• Heavier than lithium batteries, which might affect portability.
• Lacks some advanced features found in higher-end batteries.

Optima OPT 8016 Deep Cycle Marine Battery

The Optima Deep Cycle Marine Battery stands out for its exceptional performance and reliability. It features advanced Spiralcell and Pureflow technology, significantly enhancing its vibration resistance and power efficiency. The battery’s unique sealed design makes it maintenance-free and allows for versatile mounting. A 55 amp-hours and 120-minute reserve capacity ensure long-lasting power even in challenging conditions. Its weather-resistant and damage-proof exterior further adds to its durability. Whether using it for a trolling motor, an RV, or solar panels, this battery is designed to consistently deliver safe and reliable performance.

PROS:

• Exceptional vibration resistance is 15 times more than standard batteries.
• Maintenance-free and wholly sealed design.
• High-quality lead cells for improved power efficiency.

CONS:

• Higher price point compared to other batteries.
• Slightly heavier than some alternatives.

Bass Pro Shops Power Series Deep Cycle AGM Marine Battery

The Bass Pro Shops Power Series Deep Cycle AGM Marine Battery is a budget-friendly and versatile choice for anglers. This deep cycle battery, featuring AGM technology, offers excellent durability and performance. Available in multiple sizes, the Group 27 model strikes a great balance between power and affordability. It’s designed to handle the demands of a full day of fishing, with a high cold-cranking rating and extended reserve capacity. Its dual-purpose design adds versatility, making it suitable for starting the motor and deep cycling. With a solid warranty, this battery is a reliable and economical choice for those needing dependable power.

PROS:

• Versatile dual-purpose design for starting and deep cycling.
• Affordable and widely available, perfect for beginners.
• Long reserve capacity for extended use.

CONS:

• Heavier than comparable lithium batteries.
• It may only hold a charge if premium options are available.

VMAX 857 AGM Battery

The VMAX 857 AGM Battery is a robust choice for small boat owners who frequently hit the water. This 12v trolling motor battery offers a capacity of 35Ah, which means it can deliver 35 amps of current for one hour, making it well-suited for most small boats. As an AGM (Absorbent Glass Mat) battery, it requires minimal maintenance and is spill-proof, providing peace of mind during use. The VMAX 857 is built with military-grade metal plates, which are thicker and more durable than those found in typical batteries. This design allows it to withstand vibrations and harsh conditions, extending its lifespan. With a one-year warranty included, this battery is a reliable and economical option for those looking for consistent performance without the hassle of frequent maintenance.

PROS:

• Durable construction with military-grade metal plates.
• Spill-proof and maintenance-free design.
• One-year warranty for added peace of mind.

CONS:

• Lower capacity compared to larger batteries.
• Heavier than lithium alternatives.

Conclusion

In conclusion, selecting the best battery for trolling motor use involves considering factors such as durability, maintenance needs, and overall performance. Whether you opt for the rugged reliability of the VMAX 857 AGM Battery or the advanced technology of the MANLY 12V 100Ah Deep Cycle Lithium Battery, choosing the right battery ensures that your trolling motor runs smoothly and efficiently. By thoroughly understanding your boating requirements, you can confidently select a battery that offers the best power, longevity, and value for your needs.