When it comes to powering your trolling motor, selecting the right replacement battery is essential for ensuring optimal performance and longevity. The market offers a variety of options, each with its strengths, tailored to different needs and preferences. Whether you prioritize long-lasting power, fast charging, or budget-friendly solutions, there is a battery suited to your specific trolling motor setup. In this guide, we will highlight the best replacement batteries for trolling motors, categorized by type and functionality to help you make the right choice.

1. Best Lithium Battery: Dakota Lithium 36V 110Ah

The Dakota Lithium 36V 110Ah stands out as one of the most powerful and efficient lithium batteries for trolling motors. It delivers 200% more power than traditional lead-acid batteries, ensuring extended usage without sacrificing performance. With a much lighter build, weighing about half as much as its lead-acid counterparts, it is perfect for anglers who want to minimize boat weight while maximizing power.

Key Features

• High Power Output: Offers 200% more power than traditional batteries.
• Faster Charging: Charges up to 5 times faster than lead-acid batteries, which is essential for reducing downtime between trips.
• Durability: An 11-year warranty ensures long-term reliability.
• Consistent Power: Maintains full power throughout its charge, preventing performance dips as the battery depletes.

Pros

• Longer battery life.
• Faster charging time.
• Lighter weight for easier handling.

Cons

• Higher upfront cost.

The Dakota Lithium 36V 110Ah is perfect for anglers seeking the best possible performance, with long-lasting, consistent power for extended trips on the water.

2. Best Deep Cycle Battery: Relion RB24V100 Lithium Iron Phosphate Deep Cycle Battery

If you’re looking for a deep cycle battery that offers superior longevity and reliability, the Relion RB24V100 is an excellent choice. With its Lithium Iron Phosphate (LiFePO4) chemistry, this battery offers a much longer lifespan than typical lead-acid options, making it ideal for trolling motors that undergo frequent discharge and recharge cycles.

Key Features

• Capacity: 24V, 100Ah capacity for long-lasting power.
• Lightweight: Weighs 50-60% less than equivalent lead-acid batteries, easing the load on your boat.
• Extended Lifespan: Provides up to 10 times the lifespan of lead-acid batteries, rated to deliver 80% of its capacity even after 2,000 cycles.

Pros

• Lightweight and portable.
• Extremely long lifespan, offering greater value over time.
• High efficiency for deep cycle use.

Cons

• Higher cost compared to lead-acid batteries.

The Relion RB24V100 is a top-tier option for those who want durability and longevity in a deep cycle battery, especially in environments requiring continuous and heavy use.

3. Best AGM Battery: Bass Pro Shops Power Series Deep-Cycle AGM Marine Battery

For those seeking a reliable AGM (Absorbed Glass Mat) battery, the Bass Pro Shops Power Series Deep-Cycle AGM Marine Battery is a solid choice. AGM batteries are known for their maintenance-free nature and spill-proof design, making them ideal for marine applications where reliability is key.

Key Features

• Sealed, Spill-Proof Design: Ensures safe and easy installation without the risk of leaks.
• Long Lifespan: Designed to last up to 4 years, outpacing many standard lead-acid batteries.
• Minimal Maintenance: Requires less upkeep compared to traditional batteries.

Pros

• No maintenance required.
• Spill-proof, making it ideal for rough conditions.
• Longer lifespan than standard lead-acid batteries.

Cons

• Heavier than lithium options.

The Bass Pro Shops Power Series AGM battery is perfect for anglers who prioritize durability, safety, and maintenance-free operation.

4. Best 12V Battery: Relion Group 31 RB100 Lithium Iron Phosphate Deep Cycle Battery

The Relion Group 31 RB100 is an excellent 12V deep cycle battery that combines power, efficiency, and durability. It’s an ideal replacement battery for most trolling motors, offering high performance with minimal maintenance.

Key Features

• 12V, 100Ah Capacity: Perfect for long trips on the water, providing steady, reliable power.
• Maintenance-Free: No need to check water levels or perform maintenance.
• Lightweight: Much lighter than comparable lead-acid batteries.

Pros

• High power output in a compact form.
• Maintenance-free operation.
• Affordable compared to other lithium options.

Cons

• Higher initial cost compared to traditional lead-acid batteries.

The Relion Group 31 RB100 is an excellent choice for those looking for a reliable 12V battery that offers more power and a longer lifespan than typical lead-acid alternatives.

5. Best Budget Lithium Battery: Goldenmate 12V 100Ah LiFePO4 Lithium Battery

For those on a budget but still seeking the benefits of lithium technology, the Goldenmate 12V 100Ah LiFePO4 offers a cost-effective solution without compromising on performance.

Key Features

• Longevity: Provides up to 10 times the lifespan of standard lead-acid batteries, offering great value for the price.
• Temperature Protection: Equipped with high and low temperature protections to ensure safe operation in various conditions.
• Easy Maintenance: Rechargeable and easy to maintain, making it a hassle-free choice.

Pros

• Affordable lithium option.
• Long lifespan for the price.
• Temperature protections ensure safe and efficient operation.

Cons

• Fewer advanced features compared to premium options.

The Goldenmate 12V 100Ah is a great budget-friendly lithium battery for those looking to make the switch from lead-acid without breaking the bank.

Factors to Consider When Choosing a Replacement Battery

When selecting the best replacement battery for your trolling motor, several factors should influence your decision:

• Voltage and Capacity (Ah): Ensure the battery’s voltage and amp-hour capacity meet your motor’s requirements.
• Battery Type: Lithium batteries offer superior performance and longevity, but AGM and deep cycle lead-acid options remain reliable and affordable.
• Weight: For smaller boats, lighter batteries may be necessary to avoid compromising speed and balance.
• Charging Time: Some batteries charge faster than others, an important consideration for anglers on tight schedules.
• Budget: Lithium batteries tend to be more expensive upfront but often provide better long-term value due to their extended lifespans.

Conclusion

The best replacement batteries for trolling motors vary depending on your specific needs, budget, and the type of motor you’re using. Whether you’re seeking high performance, budget-friendly options, or long-lasting durability, the batteries listed above represent the best choices in each category. Lithium batteries, such as the Dakota Lithium and Relion RB24V100, offer superior power and longevity, while AGM batteries like the Bass Pro Shops Power Series provide a reliable and maintenance-free alternative. By carefully considering your options and matching your battery to your trolling motor’s requirements, you can ensure optimal performance and prolonged battery life on the water.