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Selecting the Best Trolling Motor Battery

by Johnny Stansell on Mar 05, 2024

Selecting the Best Trolling Motor Battery

Finding the right batteries for your fishing boat can be a daunting task, but when armed with the right information it doesn’t have to be. Some additional guidelines for trolling motor power are listed below to help make sure you can supply clean, safe power to your trolling motor.

  • Battery Type and Group Size
    • Select the battery type and group size that best suits your budget, performance desires, and space limitations.
    • Do not mix battery types in 24 or 36-volt systems (i.e. Do not connect a Lead-Acid and Lithium in a series to create a 24-volt system)
  • Battery Capacity - Amp Hour Rating
    • We suggest selecting a 12-volt deep cycle marine battery with at least 110 amp hour rating. Usually Group 27 size or larger.
    • The higher the amp-hour rating, the more run time your trolling motor will receive.
    • If an amp hour rating is not available, select a deep cycle battery with a minimum of 180 minutes reserve capacity.
  • Deep Cycle Batteries
    • No matter what battery type you choose, make sure it's a “deep cycle” battery.
    • When shopping for Lithium marine batteries, you may not see “Deep Cycle”, but essentially all LiFePO4 batteries are designed to operate this way.
  • Cranking / Starting Batteries
    • A cranking battery is not suitable for use with an electric trolling motor because they focus on quick, strong burst of power to start your outboard engine vs long-lasting power for trolling motor use.
    • We recommend that you use separate deep cycle marine batteries for your Minn Kota trolling motor.