What Battery Do You Use for a Fish Finder?

What Battery Do You Use for a Fish Finder?

In this blog post, we'll explore the best types of batteries for fish finders, what to consider when choosing one, and some top recommendations to help you make an informed decision.

If you're an angler, you know that a reliable fish finder can make all the difference in your fishing experience. But to get the most out of your fish finder, you need the right battery. In this blog post, we'll explore the best types of batteries for fish finders, what to consider when choosing one, and some top recommendations to help you make an informed decision.


Why the Right Battery Matters

A fish finder is an essential tool for locating fish and understanding underwater terrain. However, it relies on a steady power supply to function effectively. Choosing the right battery ensures that your fish finder runs smoothly for extended periods, allowing you to focus on fishing rather than worrying about your equipment.

Types of Batteries for Fish Finders

There are several types of batteries suitable for fish finders, each with its own advantages and disadvantages. The main types include:

1. Sealed Lead Acid (SLA) Batteries


  • Affordable

  • Widely available

  • Reliable


  • Heavy

  • Limited lifespan

  • Longer charging times

SLA batteries are a popular choice due to their affordability and dependability. They're sealed, meaning they don't require maintenance, and they're easy to find in most stores. However, they are quite heavy, which can be a drawback if you need to carry them for long distances.

Sealed Lead Acid (SLA) Batteries

2. Lithium-Ion Batteries


  • Lightweight

  • Long lifespan

  • Fast charging


  • Expensive

  • Requires specific chargers

Lithium-ion batteries are becoming increasingly popular for fish finders because they offer many advantages over traditional SLA batteries. They are significantly lighter, have a longer lifespan, and charge much faster. However, they come at a higher cost and require specific chargers, which can add to the initial investment.

Lithium-Ion Batteries

3. Lithium Iron Phosphate (LiFePO4) Batteries


  • Extremely long lifespan

  • Safe and stable

  • Lightweight


  • Expensive

  • Requires specific chargers

LiFePO4 batteries are a type of lithium battery known for their safety and stability. They offer an extremely long lifespan and are lightweight, making them an excellent choice for fish finders. Like other lithium batteries, they are more expensive and require specific chargers.

Lithium Iron Phosphate (LiFePO4) Batteries

Key Considerations When Choosing a Battery

When selecting a battery for your fish finder, consider the following factors:

1. Capacity

Battery capacity is measured in ampere-hours (Ah). The higher the capacity, the longer the battery will last. Choose a battery with enough capacity to power your fish finder for the duration of your fishing trips.

2. Voltage

Most fish finders operate on 12V batteries. Ensure that the battery you choose matches the voltage requirements of your fish finder.

3. Size and Weight

If you need to carry your battery over long distances or have limited space on your boat, consider the size and weight of the battery. Lithium batteries are typically lighter and more compact than SLA batteries.

4. Charging Time

Consider how long it takes to charge the battery fully. Lithium batteries generally charge faster than SLA batteries, which can be a significant advantage if you need to recharge between trips.

5. Durability and Lifespan

Look for a battery that can withstand the rigors of outdoor use and has a long lifespan. Lithium batteries, particularly LiFePO4, are known for their durability and longevity.


Choosing the right battery for your fish finder is crucial for a successful and enjoyable fishing experience. Consider the type of battery, its capacity, voltage, size, weight, charging time, and durability when making your decision. Whether you opt for a reliable SLA battery, a lightweight lithium-ion battery, or a durable LiFePO4 battery, the right choice will keep your fish finder running smoothly and enhance your time on the water. Happy fishing!

Prices are updated in real time

Lithium Batteries Price List

Lithium Battery Model Price Discounted Buy link
12v 100ah lithium ion battery 11 12V 100Ah $328.99 Sauver $161.00 Shop Now
Batterie au lithium 12 V 200 Ah Plus LiFePO4, BMS 200 A intégré et coupure basse température. 11 12V 200Ah Plus 200A BMS $587.99 Sauver $102.00 Shop Now
12V 300Ah LiFePO4 Lithium Battery 11 12V 300Ah $875.99 Sauver $64.00 Shop Now

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