Deep Cycle Trolling Motor Batteries: Provide Continuous Power for your Trolling Boat

What Is a Trolling Motor Battery?

A trolling motor battery is a deep-cycle energy storage battery specifically designed for trolling motors (electric propulsion systems) on boats. It features deep-cycle discharge, high capacity and durability, waterproof and shock-resistant construction, and intelligent management. This battery provides power for trolling boats.

For marine batteries, the engine must be started and then provide enough power to maintain the motors and equipment connected to the boat.Types of trolling motor batteries

1. Types of trolling motor batteries

There are generally three main types of batteries available on the market: lead-acid batteries, AGM (Absorbent Glass Mat) batteries, and lithium batteries.

· Standard Lead-Acid Battery

Lead-acid batteries are commonly used with trolling motors due to their affordability and reliable performance. While they offer a lower upfront cost, they typically require periodic maintenance, such as checking the water levels inside the battery. These batteries generally last around 2 to 3 years. If the water level is low, it’s essential to add distilled water to avoid damaging the battery.

· AGM Battery

AGM (Absorbent Glass Mat) batteries differ from traditional lead-acid wet batteries in that they are fully sealed and require no maintenance. Although AGM batteries come at a higher price, they tend to last longer—around 3 to 4 years—compared to standard lead-acid batteries. This makes them a more convenient option for those looking for a hassle-free experience.

· Lithium Battery

Trolling motor lithium batteries offer a significant advantage over lead-acid batteries by lasting up to 10 times longer, while being lighter and more compact. Additionally, they support fast charging times of 1-2 hours, allowing you to maximize your time on the water and enjoy longer adventures without worrying about battery life.

2. Voltage of trolling motor batteries

Most motor batteries are typically 12 volts. We recommend checking your power system to see if a higher voltage is needed. Some systems may require 24 or 36 volts.

3. Capacity of trolling motor batteries

The capacity of a battery determines how long it will last. A higher amp-hour rating provides more energy to your trolling motor, extending its runtime. We recommend using at least a 100 amp-hour battery to ensure reliable performance. However, for longer-lasting power, a 120 or 150 amp-hour battery is ideal. The best amp-hour rating for you will depend on your specific needs and how long you require your motor to run.

4. Dimensions of trolling motor batteries

What size battery for the trolling motor? The battery's dimensions typically depend on the size of your battery compartment. It’s important to choose a battery that fits comfortably within the available space. If the battery is too large to fit in the compartment, it may cause issues, while a battery that’s too small will reduce the overall runtime and efficiency. Be sure to match the battery size to your compartment to ensure optimal performance.

Factors to consider when choosing a trolling motor battery

Factors to consider when selecting a trolling motor battery include battery type, voltage, capacity (amp-hour rating), and physical dimensions. Additionally, if the trolling motor battery is intended for short trips or fishing excursions, a high-power battery is required.

Recommendations for choosing the right trolling motor battery:

You should always be very careful when choosing the right motor battery for your boat, always choosing the right type of battery for the right type of boat. There are many different types of trolling motor batteries available on the market, such as lithium-ion, deep cycle, and absorbent glass mat batteries. Generally speaking, the most cost-effective is the lithium-ion battery

How does a trolling motor battery work？

While the battery is discharging and providing an electric current, the anode releases lithium ions to the cathode, generating a flow of electrons from one side to the other.

When plugging in the device, the opposite happens: Lithium ions are released by the cathode and received by the anode.

This process creates an electrical current that powers the electronic devices.

How long does a trolling motor battery last

Lithium trolling motor batteries usually last for 4,000 times cycles, while lead acid batteries for 1,000 to 1,500 times cycles.

Also the lithium batteries are lower maintenance than lead acid batteries. Lead acid batteries need to be kept topped up with water to protect the lead plates inside them. And they will become damaged if they are allowed to get too hot or too cold. However, the lithium battery are sealed and maintenance free.

How to charge trolling motor battery？And how long is it when charging?

The charging process is quite simple, and it’s similar for lithium battery chargers as well:

Step one: Unplug your motor. Check the battery for any leaks or damage, and ensure the battery terminals are clean.

Step two: Connect the charger to the battery—positive to positive, negative to negative.

Step three: Plug the charger into the power source. Once connected, turn it on.

Step four: Monitor the charging progress. When it's fully charged, unplug the charger.

Regarding charging duration:

The charging time depends on the specific charger used in your system. Lithium-ion batteries have low internal resistance, allowing them to absorb all the current delivered during a charge cycle. For example, if you have a 50-amp charger and a 100-amp-hour battery, you can divide the 100 amps by 50 amps, resulting in a 2-hour charging time.

In another scenario, if you have five 100Ah batteries (totalling 500Ah) and a 100-amp charger, it would take about 5 hours to fully charge from empty to 100 percent, allowing time for the charging cycle to balance.

It’s important not to exceed the recommended charge rate, as doing so could shorten the battery's lifespan. While it’s possible to charge the battery at a faster rate in emergencies, this should not become a regular practice to avoid damaging the battery

Selecting Premium Trolling Motor Batteries

Premium trolling motor batteries provide essential power for your journeys. We typically offer:

12V trolling motor batteries

24V trolling motor batteries

36V trolling motor batteries

48V trolling motor batteries

For more models, please consult our customer service - we provide customised power solutions tailored to your needs!