How To Charge Trolling Motor Battery Without Shore Power

How to Charge a Trolling Motor Battery (Updated July 2022)
How to Charge a Trolling Motor Battery (Updated July 2022) from


Having a trolling motor for your boat can greatly enhance your fishing experience. However, the battery that powers the motor needs to be charged regularly to ensure it doesn’t die out in the middle of your fishing trip. While shore power is a convenient option, there may be times when you don’t have access to it. In this article, we will explore alternative methods to charge your trolling motor battery without shore power.

1. Solar Panels

Solar panels are an excellent option for charging your trolling motor battery when you’re away from shore power. They harness the power of the sun and convert it into electricity to charge your battery. You can easily install solar panels on your boat or use portable ones. Just make sure to position them in a spot where they can receive maximum sunlight.

2. Portable Generators

If you’re looking for a reliable and portable solution, consider investing in a portable generator. These devices run on fuel and can provide power to charge your trolling motor battery. Look for generators specifically designed for marine use to ensure they are safe and efficient.

3. Wind Turbines

If you often sail in windy conditions, a wind turbine can be a sustainable option for charging your trolling motor battery. They work by harnessing the wind’s energy and converting it into electricity. Wind turbines are a bit more complex to install compared to other options, but they can be a great long-term investment.

4. Alternator Charging

If your boat has an inboard motor, you can utilize the alternator to charge your trolling motor battery. Simply connect the battery to the alternator using appropriate cables and let the engine run. This method is convenient as it charges the battery while you’re using the boat, but keep in mind that it may take longer to fully charge.

5. Dual-Battery System

If you have two batteries on your boat, you can set up a dual-battery system. This involves connecting both batteries using a switch and a battery isolator. While one battery powers the trolling motor, the other can be charged using a charger connected to shore power or any other available method.

6. Portable Battery Charger

A portable battery charger is a compact and convenient option for charging your trolling motor battery. These chargers can be connected to a power source like a car battery or a generator and then connected to your trolling motor battery. They are easy to use and provide a quick and efficient charge.

7. Battery Charging Station

If you frequently find yourself without shore power, consider investing in a battery charging station. These units are designed specifically for charging batteries and can be powered by solar panels, wind turbines, or generators. They provide a dedicated charging solution for your trolling motor battery.

8. Power Inverter

If you have access to a car battery or a generator, you can use a power inverter to charge your trolling motor battery. A power inverter converts the DC power from the battery or generator into AC power, which can be used to charge your battery. Make sure to choose an inverter that matches the power requirements of your battery.

9. Hydroelectric Charging

If you often navigate through rivers or streams with a strong current, hydroelectric charging can be a viable option. You can use a hydroelectric generator to convert the kinetic energy of the moving water into electricity. This method allows you to charge your trolling motor battery while enjoying your boating adventure.

10. Battery Swapping

If none of the above options are feasible for you, consider carrying multiple fully charged batteries with you. When one battery runs out, simply swap it with a fully charged one. This method requires some planning and preparation, but it ensures that you never run out of power during your fishing trips.


Charging your trolling motor battery without shore power is possible with the various options available. Whether it’s utilizing renewable energy sources like solar panels or wind turbines, or using alternative power sources like generators or alternators, there is a solution for every boating situation. Choose the method that best suits your needs and enjoy uninterrupted fishing adventures with your trolling motor.