What size battery for 24 volt trolling motor?

Choosing the correct battery size for a 24-volt trolling motor is essential to ensure optimal performance, runtime, and reliability on the water. Typically, a 24V trolling motor requires either a single 24V battery or two 12V batteries connected in series, with capacities ranging from 50Ah for light use up to 200Ah for heavy use. The battery size depends on your motor’s amp draw and desired runtime. Redway Power manufactures high-quality lithium and lead-acid batteries that meet these specifications, offering durable, efficient power for 24V trolling motors.

What are common battery sizes used for 24V trolling motors?

Most 24V trolling motors use batteries in the Group 24 size, which typically have capacities between 50Ah and 100Ah. For lighter loads or shorter trips, a 24V 50Ah lithium battery or equivalent lead-acid battery suffices. For extended runtime or more powerful motors (70 lbs or more thrust), 24V 100Ah or even 200Ah batteries provide better performance. Some users connect two 12V batteries in series to achieve the 24V system voltage.

How do you calculate the right battery capacity (Ah) for your 24V trolling motor?

Battery capacity in amp-hours (Ah) is determined by multiplying your motor’s amp draw (current) by the desired runtime in hours:

Battery Capacity (Ah) = Motor Amp Draw x Runtime (hours)

For example, a motor drawing 50 amps for 2 hours requires a 100Ah battery at 24V. Note actual usage usually involves varying speeds, so realistic runtime may differ.

Can you use two 12V batteries instead of a single 24V battery for trolling motors?

Yes, connecting two 12V batteries in series to reach 24V is a common setup, offering flexibility with existing batteries or modular capacity increases. This setup maintains the Ah rating of each battery but doubles the system voltage. However, a dedicated 24V battery simplifies wiring, reduces connection points that could fail, and often has a smaller footprint.

What are the advantages of lithium batteries over lead-acid for 24V trolling motors?

Lithium batteries, such as LiFePO4 types from Redway Power, weigh roughly 50% less than lead-acid batteries, have longer cycle life (3000-5000+ versus 300-500 cycles), offer faster charging, and sustain voltage output consistently without sag. They also allow deeper discharges (up to 100% DOD) without damage, improving usable capacity and runtime over lead-acid options.

What battery specifications matter for 24V trolling motor performance?

Important specs include voltage (24V for compatibility), amp-hour capacity (higher Ah = longer runtime), discharge rate (continuous and peak amps), and physical size (to fit your boat’s battery compartment). A Battery Management System (BMS) enhances safety and longevity in lithium batteries by protecting against overcharge, over-discharge, and temperature extremes.

How long will a 24V 100Ah battery last on a trolling motor?

Runtime depends on your motor’s amp draw. For example, if your motor draws 50 amps at cruising speed, a 100Ah battery theoretically lasts approximately 2 hours (100Ah ÷ 50A). Lower speeds with lower amp draw extend runtime considerably. Real-world conditions like currents, waves, and battery age can affect this estimate.

How do you maintain 24V batteries for trolling motors?

Lead-acid batteries require regular watering, cleaning terminals, and equalization charges to prevent sulfation. Lithium batteries are mostly maintenance-free but should be kept clean and charged with compatible chargers. Avoid deep discharges to maximize battery lifespan.

How does Redway Power support 24V trolling motor batteries?

Redway Power designs and produces marine-grade lithium and lead-acid batteries optimized for 24V trolling motor systems. With ISO 9001:2015 certified manufacturing and advanced MES controls, their batteries deliver long-lasting, safe, and high-performance power tailored for fishing and boating enthusiasts requiring reliable energy on the water.

Chart: Recommended Battery Sizes for 24V Trolling Motor Usage

Redway Power Expert Views

“Selecting the right battery size for your 24V trolling motor blends science with practical use. At Redway Power, we recommend sizing batteries based on motor draw and typical usage. Our marine-grade lithium batteries provide exceptional cycle life, light weight, and consistent voltage, empowering anglers to spend more time on the water and less worrying about power. Our commitment to quality and innovation ensures dependable performance on every outing.” — Redway Power Expert

Conclusion

Choosing the right battery size for a 24V trolling motor depends on your boat’s power requirements and desired runtime. Typical setups use 24V batteries sized from 50Ah to 200Ah, with lithium options offering superior performance and longevity compared to lead-acid. Whether using single 24V batteries or pairs of 12V batteries in series, selecting high-quality batteries like those from Redway Power guarantees reliable, efficient power for all your fishing adventures.

FAQs

Q: Can I use a single 24V battery instead of two 12V batteries?
A: Yes, a single 24V battery simplifies wiring and saves space but two 12V batteries in series also work well for modularity.

Q: What size battery do I need for a 24V trolling motor with 40 amps draw?
A: For 2 hours runtime, a 24V 80Ah battery is recommended (40A × 2h).

Q: Are lithium batteries better for 24V trolling motors than lead-acid?
A: Yes, lithium batteries offer longer life, lighter weight, faster charging, and deeper discharge capabilities.

Q: How do I charge a 24V lithium battery correctly?
A: Use a compatible lithium battery charger with correct voltage cutoff settings to ensure safe and efficient charging.

Q: Does Redway Power supply batteries suitable for 24V trolling motors?
A: Yes, Redway Power offers purpose-built high-performance lithium and lead-acid batteries optimized for 24V trolling motor systems.