What is the Best Lithium Battery for Trolling Motor?

Having the right trolling motor battery is critical for a smooth, reliable, and long-lasting adventure on the water. In this guide, we’ll explore what kind of battery is ideal for trolling motors and what is the best lithium battery option for different trolling motor setups.

What Kind of Battery is Best for Trolling Motor?

When choosing a battery for your trolling motor, deep cycle batteries are the best types, especially lithium deep cycle marine batteries.

While traditional lead-acid batteries have served boaters for years, lithium batteries are now the top choice for powering trolling motors due to their high efficiency, lightweight design, and extended lifespan.

Why Lithium is the Best Choice for Trolling Motor Batteries?

• Lightweight and Compact: Lithium iron phosphate (LiFePO4) batteries weigh up to 60% less than lead-acid counterparts, improving boat balance and speed.
• Longer Lifespan: While traditional lead-acid batteries may last 300–500 cycles, a quality lithium battery offers over 4,000 cycles.
• Consistent Power Output: Unlike lead-acid batteries that drops voltage rapidly as they discharge, lithium batteries deliver a steady voltage from full charge to near empty, providing constant thrust to your trolling motor.
• Fast Charging: LiFePO4 batteries can charge significantly faster, reducing downtime and allowing you to get back on the water quicker.
• Maintenance-Free: Lithium batteries are no acid spills, no water refills, and built-in battery management system (BMS) for maximum safety and reliability.

What Size of Lithium Trolling Motor Battery Do I Need?

Now that you've realized you may need a lithium battery for trolling motors, the question is—how do you choose the right one among the many options on the market? The key is to consider your motor's power draw requirements and the thrust of the trolling motor.

Trolling Motor Power Draw

Here’s a quick guide based on trolling motor voltage and wattage ranges, with the recommended battery capacity (Ah):

For higher-power motors or extended use time, you can increase battery capacity by connecting multiple batteries in parallel—as long as the capacity, voltage, types, and BMS stays the same. For example:

• Two 12V 100Ah batteries in parallel = 12V 200Ah for power ranging of 1200W-2400W
• Two 36V 50Ah batteries in parallel = 36V 100Ah for power ranging of 2000W-4000W

Trolling Motor’s Thrust

The other main factor is your trolling motor’s thrust. Thrust, measured in pounds (lbs), refers to the amount of force the motor uses to move your boat through the water. The more thrust, the more power your motor requires, and the larger the battery capacity you’ll need to power it effectively.

Here’s Redodo recommended trolling motor battery setup by thrust and voltage:

For a common 55lb thrust trolling motor, a 12V 100Ah lithium battery is ideal. It can run your bass boat continuously at around 50% power for about 4-5 hours.

Best Lithium Batteries for Trolling Motors by Redodo

Redodo provides a wide ranges of lithium batteries for trolling motors, which are reliable and long-lasting. Here are our top lithium battery recommendations tailored to various trolling motor setups, from small fishing kayaks to larger boats with powerful motors.

Redodo 12V 100Ah Lithium Trolling Motor Battery

Best for: Kayaks, canoes, inflatable boats, and small to medium fishing boats using 12V trolling motors of 30–70lbs.

Key Features:

• Low-Temperature Protection: Automatically stops charging below 32°F (0°C) to prevent battery damage in cold weather.
• Built-in Smart BMS: Offers over 20 of protection including overcharge, over-discharging, overcurrent, overheating, and short-circuit.
• High Efficiency: Delivers stable voltage for consistent motor thrust.
• Lightweight Design: Weighs only 22.15lbs, easier to transport and install.
• Group 31 Size: Seamless replacement of lead-acid batteries.
• Built for Harsh Conditions: The upgraded BMS offers enhanced resistance to moisture and salt spray.

Why It’s Great:
One of Redodo best-selling batteries. With its reliable performance, long lifespan, and competitive price, this battery stands out as the best 12V 100Ah lithium battery for trolling motor.

Redodo 12V 100Ah Group 31 Bluetooth Lithium Battery

Best for: Users who want real-time monitoring and remote-control features.

Key Features:

• Bluetooth 5.0 Monitoring: View state of charge (SOC), voltage, cycles, and temperature from the Redodo app.
• Remote Power Control: Switch the battery on/off without accessing your battery compartment.
• Low-Temp Cutoff & Auto Recovery: Charges safely in winter, resumes automatically in safe conditions.
• Group 31 Size: Seamless replacement of lead-acid batteries.
• High Energy Density: Offers 1280Wh energy and 1280W output with only 39% of the weight of traditional lead-acid batteries.
• Marine-Grade Protection: Fully protected against moisture, dust, and salt spray.

Why It’s Great:
The Group 31 Bluetooth Lithium Battery is the upgraded version of Redodo 12V 100Ah Trolling Motor Battery, perfect for boaters who value visibility and control. Whether you're offshore or at camp, you’ll know your battery status in real-time—right from your phone.

Redodo 12V 100Ah Plus Bluetooth Marine Battery

Best for: Boaters who demand marine setups and high-draw outboard motors.

Key Features:

• Outboard-Ready: Designed to handle the power needs of electric outboard motors with stable and responsive output.
• High-thrust Startup: Delivers 120A continuously for 3 minutes and supports up to 500A peak for 1 second.
• Bluetooth Monitoring: Stay in control with real-time insights into battery status, voltage, and usage via mobile app.
• Low-Temp Protection: Safely cuts off charging below 32°F (0°C) and resumes above 41°F (5°C).
• Lightweight Build: Weighs only 22.09 lbs, easy to carry, install, and mount in compact marine compartments.
• Expandable System: Supports up to 5P5S connections for building a powerful 60V lithium battery bank.

Why It’s Great:

The 12V electric outboard motor battery combines high burst power and Bluetooth intelligence in a compact, lightweight form built for marine performance.

Redodo 24V 50Ah LiFePO4 Trolling Motor Lithium Battery

Best for: Mid-sized boats with 24V trolling motors up to 100lbs of thrust.

Key Features:

• Bluetooth Monitoring: Easily track battery status, voltage, capacity, and cycles in real-time via the mobile app.
• Low-Temperature Protection: Automatically stops charging below 32°F (0°C) and resumes above 41°F (5°C) to prevent cold-weather damage.
• Compact Group 24 Size: Space-efficient design fits easily into tight marine or RV battery compartments.
• Lightweight Build: Weighs only 21.14 lbs, significantly lighter than comparable lead-acid batteries for easier handling and installation.
• Smaller Footprint: Eliminates the need to wire two 12V batteries in series.
• EV-Grade Cells: Built with EV-grade prismatic cells for reliable, long-term performance.

Why It’s Great:
This 24V trolling motor battery simplifies installation, reduces wiring complexity, and is great upgrade for those using dual 12V batteries for a 24V system boat.

Redodo 36V 50Ah Trolling Motor Lithium Battery

Best for: Large fishing boats and saltwater vessels with 100-120 lbs of thrust 36V trolling motors.

Key Features:

• Lightweight Design: Weighs only 32.8 lbs, much lighter than traditional three 12V multi-battery setups.
• Compact Group 31 Size: Streamlined form fits standard marine battery trays for easy installation.
• Low-Temp Cutoff Protection: Automatically prevents charging below 32°F (0°C) and resumes safely at warmer temperatures.
• Marine-Grade BMS: Enhanced BMS resists moisture, salt spray, and shock, engineered for harsh marine environments.
• EV-Grade Cells: Built with premium automotive-grade cells for superior safety, power delivery, and cycle life.

Why It’s Great:
The battery is one of the best 36V lithium battery for trolling motor — all-in-one solution for replacing the need for 3 x 12V batteries wired in series, while reducing wiring, weight, and installation hassle.

Conclusion

The best lithium battery for a trolling motor depends on your motor’s voltage, power draws, and runtime requirements. Whether you need a reliable 12V LiFePO4 battery option for casual kayaking or a high-performance 36V battery for tournament fishing, Redodo has a solution that balances power, safety, and value.

Need help choosing the right battery for your trolling motor setup? Contact us through the online chat at the bottom right or email to service@redodopower.com. We’ll help you power your next fishing trip with confidence.

Read More:

What Does a 12V Battery for Boat Weigh?

Trolling Motor Lithium Battery Runtime Guide

Group 24 VS Group 31 Deep Cycle Batteries