Complete Guide To Lithium Trolling Marine Batteries

The very last thing that you would want to bother about when you head out to sea for a full day of fishing is your trolling motor giving out before noon. Lithium Trolling Marine Batteries give continuous power to your machine over a lengthy period of time to keep the motor going, since they are made to deliver a gradual, steady discharge of power.

A lithium iron phosphate deep cycle battery is the type used in trolling motors. It is designed to give trolling motors gentle, consistent power. Although twenty four volt powered batteries are also available, twelve volt batteries are very common for lithium trolling motors. 

Benefits of Lithium Trolling Marine Batteries

  1. Comparing lithium trolling marine batteries to leadacid, AGM, or gel cell deepcycle batteries reveals that they have a number of advantages. The biggest advantage, though, is longer run duration. A lead acid battery having the same capacity will often last twice as long as a lithium battery on a single charge. 
  2. The voltage of the battery will decrease as it is discharged as you are trolling with your conventional leadacid battery. By that time the battery has been used up to about half of its amp per hour capacity, the power will have fallen too low to operate the trolling motor. Lithium batteries do not see this similar voltage decrease when you utilize the battery as they have a flat voltage curve. You may use all of your motor’s amp per hour capacity since the voltage stays constant during the discharge cycle. 
  3. Lead-acid batteries for marine use often weigh 60 to 70 pounds. A lithium marine battery, on the other hand, weighs around 30 pounds or less. For a 36volt motor that needs three 12volt batteries series – connected, a lithium battery solution may save you around 100 pounds.
  4. There is a built-in battery management mechanism in lithium trolling marine batteries. To maintain the battery working safely and lengthen its lifespan, its internal BMS checks and controls temperatures, efficiency, and rate charges. 

Lithium trolling marine batteries should be kept dry and ideally at 50% battery capacity. Additionally, Lithium trolling motor batteries need to be protected from the sun, heat, and humidity. Maintain the storage chamber dry and ventilated to keep the temperature uniform. While most room settings would be fine, 20 to 25 °C is the ideal range for keeping batteries.

Lithium battery with equal capacity would cost around one-third as much as conventional deep-cycle batteries. The initial cost savings, however, don’t seem to be worth it when you consider that these lithium batteries have a lifespan of 50 to 100 times longer, offer twice as much runtime, and can reduce the battery weight by half.

You’ll probably need to replace your lead acid batteries many times over the course of ten years to make up for the expense of converting to a lithium battery system. Additionally, your boat would become lighter, and give your boat a speed boost. This way you can enjoy your time on water.