Lithium Batteries or Lead Acid Batteries?

Lithium-Ion vs. Lead-Acid Batteries for Trolling Motors in Bass Boats: Pros and Cons


Bass fishing is a popular sport that demands quiet and efficient propulsion systems. Trolling motors are a crucial component of a bass boat, providing anglers with the ability to navigate silently and maneuver precisely. When it comes to powering trolling motors, there are two primary choices: lithium-ion batteries and lead-acid deep cycle batteries. Each type has its own set of advantages and disadvantages. In this article, we will explore the pros and cons of using lithium-ion and lead-acid batteries in a bass boat to help you make an informed decision.

Advantages of Lithium-Ion Batteries

  1. Lightweight and Compact:

    • Lithium-ion batteries are significantly lighter and more compact than their lead-acid counterparts. This makes them ideal for boats where weight is a critical factor. Bass boats often require speed and agility, and the reduced weight of lithium-ion batteries can improve boat performance.
  2. High Energy Density:

    • Lithium-ion batteries have a higher energy density, which means they can store more energy in a smaller space. This results in longer run times for trolling motors, allowing anglers to spend more time on the water without recharging.
  3. Faster Charging:

    • Lithium-ion batteries charge faster than lead-acid batteries. This means you can quickly recharge your trolling motor battery between fishing trips, reducing downtime and ensuring you’re always ready to hit the water.
  4. Deep Discharge Capability:

    • Lithium-ion batteries can withstand deeper discharge cycles without significantly affecting their lifespan. This feature is crucial for anglers who use their trolling motors extensively during a fishing day.
  5. Longer Lifespan:

    • Lithium-ion batteries generally have a longer lifespan compared to lead-acid batteries. They can endure a higher number of charge and discharge cycles before needing replacement.

Disadvantages of Lithium-Ion Batteries

  1. Higher Cost:

    • Lithium-ion batteries come with a premium price tag compared to lead-acid batteries. The initial investment can be a significant drawback for budget-conscious anglers.
    • Using 36 or 16 volt batteries will require upgrades to your battery chargers
    • Bigger battery chargers take up more room in your boat
  2. Compatibility:

    • Some older trolling motor systems may not be compatible with lithium-ion batteries, requiring additional modifications or adapters, which can add to the overall cost.

Advantages of Lead-Acid Deep Cycle Batteries


  1. Lower Cost:

    • Lead-acid batteries are more affordable upfront, making them an attractive option for those on a tight budget or anglers who prioritize cost-effectiveness.
  2. Compatibility:

    • Lead-acid batteries are widely compatible with most trolling motors and boat systems, making them a convenient choice for boat owners looking for a simple replacement.

Disadvantages of Lead-Acid Deep Cycle Batteries

  1. Heavier and Bulkier:

    • Lead-acid batteries are significantly heavier and larger than lithium-ion batteries. This can affect the boat’s performance and maneuverability, especially in smaller bass boats.
  2. Limited Depth of Discharge:

    • Lead-acid batteries should not be deeply discharged as it can reduce their lifespan. This limitation can be frustrating for anglers who need extended runtime from their trolling motors.
  3. Shorter Lifespan:

    • Lead-acid batteries typically have a shorter lifespan compared to lithium-ion batteries. They may require replacement more frequently, offsetting the initial cost savings.
  4. Slower Charging:

    • Charging lead-acid batteries takes longer compared to lithium-ion batteries, potentially leading to longer downtime between fishing trips.


Choosing the right battery for your bass boat’s trolling motor depends on your specific needs and budget. Lithium-ion batteries offer lightweight, high-performance options with longer lifespans, but they come at a higher cost. On the other hand, lead-acid deep cycle batteries are budget-friendly and compatible with most systems, but they are heavier, bulkier, and have a shorter lifespan.

Ultimately, your choice should align with your priorities. If you value performance, longer runtime, and can invest in the upfront cost, lithium-ion batteries may be the better option. However, if budget and compatibility are your main concerns, lead-acid deep cycle batteries can still provide reliable power for your trolling motor in your bass boat. Consider your boating style, frequency of use, and budget when making this important decision to enhance your bass fishing experience.