Best Lithium Battery for Trolling Motor: 12V, 24V, or 36V?
Choosing the best lithium battery for trolling motor use depends on your boat’s power requirements, motor specifications, and fishing needs. Trolling motors typically operate on 12V, 24V, or 36V systems, and lithium batteries for trolling motors offer lightweight, long-lasting, and efficient power compared to traditional lead-acid batteries. In this article, we’ll explore what a trolling motor battery is and compare 12V trolling motor battery, 24 volt trolling motor battery, and 36V options using 12V 100Ah, 24V 100Ah, and 36V 100Ah lithium batteries as examples to help you make an informed decision.
What Is a Trolling Motor Battery?
A trolling motor battery is a specialized power source designed to run electric trolling motors, which propel boats quietly and efficiently for fishing or leisurely cruising. Unlike starter batteries, which deliver short bursts of power to start engines, a trolling motor battery is a marine deep cycle battery built to provide steady, consistent power over extended periods. These batteries are essential for maintaining low-speed trolling or precise boat positioning in various fishing conditions.
Key Characteristics of a Trolling Motor Battery
- Deep Cycle Design: A marine deep cycle battery withstands repeated deep discharges (up to 80% or more) without damage, unlike starter batteries.
- Voltage Options: Available in 12V, 24V, or 36V to match the trolling motor’s requirements.
- Durability: Built to endure marine environments, including moisture, vibrations, and temperature fluctuations.
- Types: Common types include lead-acid (flooded or AGM or GEL) and lithium, lithium batteries for trolling motors gaining popularity due to their efficiency.
Choosing a high-quality trolling motor battery, such as a lithium marine deep cycle battery, ensures reliable performance and longevity for your boating adventures.
Why Choose Lithium Batteries for Trolling Motors?
Lithium batteries for trolling motors are increasingly popular due to their advantages:
- Lightweight: Lithium batteries weigh 50-70% less than lead-acid batteries, improving boat performance and fuel efficiency.
- Longer Lifespan: They last 2,000-5,000 cycles compared to 200-500 cycles for lead-acid.
- Consistent Power: Lithium delivers steady voltage throughout the discharge cycle, ensuring optimal motor performance.
- Fast Charging: Lithium batteries charge 2-3 times faster than lead-acid.
- Eco-Friendly: They contain no toxic materials and are recyclable.
Now, let’s explore the best lithium battery options for 12V, 24V, and 36V trolling motors.
12V Trolling Motor Battery: 12V 100Ah Lithium Battery
A 12V trolling motor battery is ideal for smaller boats or trolling motors with lower thrust (30-55 lbs), commonly used for kayaks, canoes, or small fishing boats. A 12V 100Ah lithium battery is a popular choice for these setups.
Key Features of a 12V 100Ah Lithium Trolling Motor Battery
- Capacity: 100Ah provides 1,200 watt-hours (12V x 100Ah), enough for 4-8 hours of moderate trolling.
- Weight: Typically 25-30 lbs, compared to 60-70 lbs for a lead-acid equivalent.
- Applications: Perfect for single 12V trolling motors like Minn Kota Endura or Newport Vessels NV-Series.
- Charging: Charges in 2-4 hours with a 20A lithium charger.
- Cost: $500-$800, higher upfront but cost-effective over time due to longevity.
Pros
- Affordable for small setups.
- Simple installation with no need for series wiring.
- Compact size fits most battery compartments.
Cons
- Limited power for high-thrust motors.
- May require multiple batteries for extended runtime.
Best For: Anglers with small boats or low-power trolling motors seeking a reliable 12V trolling motor battery.
24 Volt Trolling Motor Battery: 24V 100Ah Lithium Battery
A 24 volt trolling motor battery suits mid-sized boats and motors with 55-80 lbs of thrust, such as Minn Kota Terrova or MotorGuide Xi5. A 24V 100Ah lithium battery offers robust power for longer fishing trips.
Key Features of a 24V 100Ah Lithium Trolling Motor Battery
- Capacity: 2,400 watt-hours (24V x 100Ah), supporting 6-12 hours of trolling at moderate speeds.
- Weight: Around 50-60 lbs, significantly lighter than two lead-acid batteries (120-140 lbs) needed for a 24V system.
- Applications: Ideal for bass boats or pontoons with 24V trolling motors.
- Charging: Charges in 3-5 hours with a 30A charger.
- Cost: $1,000-$1,500, reflecting higher capacity and voltage.
Pros
- Balances power and efficiency for mid-range motors.
- Single battery eliminates complex wiring (unlike two 12V batteries in series).
- Extended runtime for all-day fishing.
Cons
- Higher cost than 12V systems.
- Requires a 24V-compatible motor and charger.
Best For: Anglers with mid-sized boats needing a powerful 24 volt trolling motor battery for extended use.
36V Trolling Motor Battery: 36V 100Ah Lithium Battery
A 36V lithium battery is designed for large boats and high-thrust trolling motors (80-112 lbs), such as Minn Kota Ultrex or Garmin Force. A 36V 100Ah lithium battery delivers top-tier performance for demanding applications.
Key Features of a 36V 100Ah Lithium Battery
- Capacity: 3,600 watt-hours (36V x 100Ah), providing 8-14 hours of trolling at varying speeds.
- Weight: Approximately 70-80 lbs, compared to 180-200 lbs for three lead-acid batteries in a 36V system.
- Applications: Suited for offshore fishing boats or large freshwater vessels.
- Charging: Charges in 4-6 hours with a 40A charger.
- Cost: $1,500-$2,500, reflecting premium power and capacity.
Pros
- Maximum power for high-thrust motors.
- Single battery simplifies installation and maintenance.
- Exceptional runtime for long-distance trolling.
Cons
- Highest upfront cost.
- Requires 36V-specific motor and charging system.
Best For: Serious anglers with large boats and high-performance motors needing a robust 36V lithium battery.
How to Choose the Best Lithium Battery for Your Trolling Motor
To select the best lithium battery for trolling motor use, consider these factors:
- Motor Voltage: Match the battery voltage (12V, 24V, or 36V) to your trolling motor’s requirements.
- Thrust Requirements: Higher thrust needs more voltage and capacity (e.g., 36V for 80+ lbs thrust).
- Runtime Needs: Estimate daily usage and choose a battery with sufficient Ah (e.g., 100Ah for 6-12 hours).
- Boat Size: Smaller boats benefit from 12V systems, while larger vessels require 24V or 36V.
- Budget: 12V batteries are the most affordable, while 36V systems offer premium performance at a higher cost.
Additional Tips for Using Lithium Batteries for Trolling Motors
- Use a Compatible Charger: Always use a lithium-specific charger to avoid overcharging.
- Check BMS (Battery Management System): Ensure the battery has a built-in BMS for safety and performance.
- Storage: Store lithium batteries at 50-70% charge in a cool, dry place.
- Maintenance: Lithium batteries require minimal maintenance compared to lead-acid.
Conclusion
The best lithium battery for trolling motor use depends on your specific needs. A trolling motor battery like the 12V 100Ah lithium battery is perfect for small boats and low-thrust motors. A 24 volt trolling motor battery, such as the 24V 100Ah lithium battery, offers a balance of power and runtime for mid-sized setups. For large boats and high-thrust motors, a 36V 100Ah lithium battery delivers unmatched performance. By choosing lithium batteries for trolling motors or a lithium marine deep cycle battery, you’ll enjoy lightweight, long-lasting, and efficient power for your fishing adventures.