Trolling motor batteries are surrounded by a lot of myths and misconceptions, which can lead to costly mistakes and reduced performance. Let’s debunk some of the most common ones: Trolling Motor Battery

1. Myth: Any 12V Battery Will Work for a Trolling Motor.

• Reality:
  • Car batteries (starting batteries) are designed for short bursts of high power, while trolling motors require sustained, low-current power.
  • Using a car battery for a trolling motor will result in short run times and damage to the battery.
  • Deep-cycle batteries (marine batteries) are specifically designed for trolling motors, providing consistent power over extended periods.

2. Myth: More Cold Cranking Amps (CCA) Is Better for Trolling Motor Batteries.

• Reality:
  • CCA is a rating for starting batteries, indicating their ability to deliver high current at low temperatures.
  • Trolling motor batteries primarily rely on amp-hours (Ah) and reserve capacity (RC) ratings.
  • Focus on Ah and RC for longer run times, not CCA.

3. Myth: All Deep-Cycle Batteries Are Created Equal.

• Reality:
  • Deep-cycle batteries come in various types: flooded lead-acid, AGM, and LiFePO4.
  • Each type has its own advantages and disadvantages in terms of performance, maintenance, and lifespan.
  • LiFePO4 batteries offer superior performance and longevity but come at a higher cost.

4. Myth: You Must Fully Discharge a Deep-Cycle Battery Before Recharging.

• Reality:
  • Deep discharges can damage lead-acid batteries and shorten their lifespan.
  • It’s best to recharge lead-acid batteries before they drop below 50% of their capacity.
  • LiFePO4 batteries are much more tolerant of deep discharges, but it is still best to avoid them.

5. Myth: Trolling Motor Batteries Don’t Require Maintenance.

• Reality:
  • Flooded lead-acid batteries require regular maintenance, including checking and refilling water levels.
  • Even AGM and LiFePO4 batteries benefit from regular inspections and cleaning of terminals.
  • Proper maintenance extends battery lifespan and ensures optimal performance.

6. Myth: Cheap Trolling Motor Batteries Are Just as Good as Expensive Ones.

• Reality:
  • Cheap batteries often have lower capacity, shorter lifespans, and inconsistent performance.
  • Investing in a quality battery can save you money in the long run by reducing the need for frequent replacements.

7. Myth: Storing a Battery on a Concrete Floor Will Drain It.

• Reality:
  • This myth originated when battery casings were made of porous materials.
  • Modern battery casings are non-porous, so storing them on a concrete floor will not drain them.
  • However, it’s still best to store batteries in a cool, dry place.

8. Myth: All Battery Chargers Are the Same.

• Reality:
  • Different battery types require different charging voltages and currents.
  • Using the wrong charger can damage your battery.
  • Smart chargers are recommended as they automatically adjust charging parameters.
  • LiFePO4 batteries must have a charger designed for them.

By understanding these realities, you can make informed decisions about your trolling motor batteries and ensure they provide reliable power for your fishing adventures.