How to Wire Batteries in Series

Jun 16, 2023

Learn how to wire batteries in series for your trolling motor with our easy-to-follow, step-by-step guide! In this video, we explain how to wire two 12V batteries to achieve a 24V system and three 12V batteries for a 36V system. This tutorial will show beginners how to wire trolling motor batteries in series to ensure optimal performance. Be sure to watch this video to learn how to choose marine batteries.

We start by demonstrating how to wire two batteries in series for a 24V trolling motor system. Using a pre-made jumper wire, you’ll learn how to connect the positive post of battery number one to the negative post of battery number two. We then explain how to connect the trolling motor's power leads to the battery system, with the black (negative) lead connected to the negative post of battery number one and the red (positive) lead connected to the positive post of battery number two.

Next, we move on to wiring a 36V system, which may seem more complex but relatively simple. We walk you through adding a third battery and an additional jumper wire to the system. You’ll learn how to connect the batteries in series, starting with battery number one and progressing through battery number three, and how to connect the trolling motor's power leads.

Finally, we demonstrate how to test the voltage of your wired batteries in series using a multimeter. You’ll see how to check the voltage of each battery to ensure proper wiring and optimal performance.

By following this step-by-step guide, you can successfully wire your trolling motor batteries in series and achieve the desired voltage for your trolling motor. Whether you’re working with a 24V or 36V system, our tutorial covers you.