Trolling Motor Lithium Battery Run-Time: How Long Will It Last?

Trolling Motor Lithium Battery Run-Time: How Long Will It Last?

In this blog post, we will explore these factors and provide guidance on estimating the run-time of your lithium trolling motor battery.
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Introduction

When using a lithium trolling motor battery, it's important to know how long it will last before needing a recharge. The run-time of the battery depends on various factors, including the battery capacity, power draw of the trolling motor, and other electrical demands. In this blog post, we will explore these factors and provide guidance on estimating the run-time of your lithium trolling motor battery.

Vatrer lithium trolling motor battery

Capacity (Amp Hours)

The capacity of a battery is measured in amp hours (Ah) and represents the amount of energy it can store and deliver over a specific period. To determine the run-time of your battery, you need to divide its capacity by the power draw of the trolling motor. A higher-capacity battery will generally provide a longer run-time compared to a lower-capacity one.

For example, let's consider a battery with a capacity of 100Ah and a trolling motor power draw of 20 amps. The run-time in hours can be calculated as follows:

Run-time = Battery Capacity / Trolling Motor Power Draw

Run-time = 100Ah / 20A = 5 hours.

Power Draw of the Trolling Motor

The power draw of the trolling motor refers to the amount of energy it requires to operate and is typically measured in watts or amps. You can find the power draw specifications in the manufacturer's manual or online resources. It's important to note that power draw can vary depending on factors such as speed settings and environmental conditions.

24.0 Vdc Power Source

Throttle Level Thrust Current
10% 25 N-m (6 lbf) 2A
20% 45 N-m (10 lbf) 3A
30% 70 N-m (16 lbf) 6A
40% 101 N-m (23 lbf) 9A
50% 140 N-m (31 lbf) 14A
60% 184 N-m (41 lbf) 21A
70% 233 N-m (52 lbf) 29A
80% 287 N-m (65 lbf) 40A
90% 345 N-m (78 lbf) 54A
100% 355 N-m (80 lbf) 57A

36.0 Vdc Power Source

Throttle Level Thrust Current
10% 21 N-m (5 lbf) 1A
20% 41 N-m (9 lbf) 2A
30% 69 N-m (16 lbf) 4A
40% 103 N-m (23 lbf) 6A
50% 144 N-m (32 lbf) 10A
60% 191 N-m (43 lbf) 15A
70% 246 N-m (55 lbf) 21A
80% 307 N-m (69 lbf) 29A
90% 375 N-m (84 lbf) 39A
100% 445 N-m (100 lbf) 54A

Other Electrical Demands on the Battery

In addition to the trolling motor, other electrical devices on board, such as lights, fish finders, and other appliances, can impact the battery's run-time. To get an accurate estimate, you should add up the power draw of all these devices and consider their usage duration during your fishing trip.

Calculating Running Time

To calculate the run-time of your lithium trolling motor battery, you can use a simple formula: Run-Time (hours) = Battery Capacity (Ah) / Total Power Draw (A) . For example, if your battery has a capacity of 100Ah and the power draw of your trolling motor is 20 amps, the run-time would be calculated as 100Ah / 20A = 5 hours. However, it is important to note that this calculation does not account for other electrical demands on the battery. To obtain a more accurate estimate, you need to factor in the power draw of all additional components and add it to the trolling motor's power draw. For instance, if a light draws 5 amps and a fish finder draws 2 amps, the total power draw would be 20 amps + 5 amps + 2 amps = 27 amps. Dividing the battery capacity by the total power draw, the run-time would be calculated as 100Ah / 27A = 3.703 hours, or approximately 3 hours and 42 minutes.

Field Tests

Field tests and customer experiences have provided valuable insights into the practical run-time of trolling motor lithium batteries. Many customers report being able to comfortably run their trolling motors and other accessories for a full day of fishing with 50Ah lithium battery models. With 100Ah models, customers have reported running their setups for two or more full days before needing to recharge. However, it is important to keep in mind that actual run-time may vary depending on factors such as temperature, battery chemistry, water conditions, and individual usage patterns. Adhering to the manufacturer's guidelines for charging, maintenance, and storage will ensure optimal performance and longevity from your battery.

Maximizing Battery Performance

To maximize the performance and run-time of your trolling motor lithium battery, consider the following tips:

  • Opt for a battery with a higher capacity to enjoy longer run-times on the water.
  • Use power settings on your trolling motor that are appropriate for the prevailing conditions to minimize power consumption.
  • Minimize the use of additional electrical components when not needed to conserve battery power.
  • Regularly monitor your battery's charge level and recharge it before it reaches critically low levels.
  • Follow the manufacturer's guidelines for charging, maintenance, and storage to ensure optimal battery health and longevity.

Conclusion

By considering the battery capacity, power draw of the trolling motor, and other electrical demands, you can estimate the run-time of your lithium trolling motor battery. Utilize the specific calculations provided in this article to determine the approximate run-time. Keep in mind that factors such as temperature, battery chemistry, and environmental conditions can affect the actual run-time. It is always recommended to follow the manufacturer's guidelines for charging, maintenance, and usage to ensure optimal performance of your battery.

FAQs

Yes, lithium batteries are generally considered better for trolling motors compared to traditional lead-acid batteries. Lithium batteries offer several advantages such as being lighter, having a higher energy density, longer lifespan, and faster charging times. They also provide consistent power output throughout their discharge cycle, which can enhance the performance of your trolling motor.

The run-time of a 100Ah lithium battery on a trolling motor depends on various factors, including the power draw of the motor, speed settings, and other electrical demands. To estimate the run-time, you can divide the battery's capacity (100Ah) by the power draw of the trolling motor. For example, if the trolling motor draws 20 amps, the estimated run-time would be approximately 5 hours.

There are several reputable brands that offer high-quality lithium batteries for trolling motors, such as Dakota Lithium, Battle Born Batteries, and RELiON. The best lithium battery for your trolling motor depends on your specific needs and budget. It's important to consider factors like capacity, voltage, weight, and warranty when selecting the best battery for your application.

Yes, it is recommended to use a charger specifically designed for lithium trolling motor batteries. Lithium batteries require a charger that can provide a controlled charging profile to ensure their longevity and safety. These chargers typically have built-in safety features and charging algorithms that are compatible with lithium battery chemistry.

The size of the lithium battery you need for your trolling motor depends on factors such as the desired run-time, power draw of the motor, and other electrical demands. As a general guideline, a 100Ah lithium battery is a popular choice for trolling motors as it offers a good balance between run-time and weight. However, you may need a larger or smaller capacity battery based on your specific requirements and preferences.

To determine the size of the battery needed for a 55 lb thrust trolling motor, you should consider the power draw of the motor and the desired run-time. As a rough estimate, a 55 lb thrust trolling motor typically draws around 40-50 amps. For a 5-hour run-time, you would need a battery with a capacity of at least 200-250Ah. However, if you plan to use the trolling motor at lower power settings or for shorter durations, a smaller capacity battery may suffice. It's essential to consider your specific usage requirements and consult the manufacturer's recommendations for optimal battery selection.

Prices are updated in real time

Lithium Batteries Price List

Lithium Battery Model Price Discounted Buy link
12V 100Ah (Self-heating) $335.99 Shop Now
12V 100Ah $222.99 Shop Now
12V 200Ah 200A BMS $556.99 Shop Now
12V 200Ah 100A BMS $478.99 Sold out Shop Now
12V 300Ah $653.99 Sold out Shop Now
12V 300Ah (Self-heating) $766.99 Shop Now
12V 460Ah $2,559.99 Save $639.00 Shop Now
36V 105Ah lithium golf cart battery $1,370.99 Shop Now
48V 105Ah LiFePO4リチウムゴルフカートバッテリー $1,556.99 Shop Now
51.2V 100Ah $1,236.99 Sold out Shop Now

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