trolling-motor

You might have your boss with important business clients out on the open lake ready for a great day. Then suddenly, your worst nightmare rears its ugly head –

Your trolling motor battery dies!

Avoid this nightmare and find out what size battery for trolling motor. Enjoy all your time out on the water without embarrassment.

All You Need to Know about Trolling Motor Batteries

Owning a boat is a dream come true for many individuals. It gives you a sense of accomplishment, success and prestige.

When the long work week is done, you can head out on the open waters and spend great times trolling for dinner. There is not much that compares with fresh fish.

Of course, when you purchase your first boat, you might not be an expert on trolling motor batteries. You might not be sure of what type of battery for trolling motor, you should choose.

Getting the right information on batteries can be difficult. But here is the solution to your problem.

To prevent a dead battery from ruining your fishing excursion, you will need the right size and type fitting your usage patterns. Regular maintenance is also key.

Trolling Motor Battery Type & Size

To fully enjoy your fishing experience, you need to have a powerful trolling motor. Each angler has his own special setup and optimization.

What type of battery for trolling motor is optimal? Here are the primary elements affecting your trolling motor battery functionality:

  1. Type
  2. Size
  3. Usage
  4. Maintenance
  5. Damage

When you optimize each of these factors, you can minimize the dangers of having a dead battery and troll as long as you want.

1. Type

Your automobile has both a battery and an alternator. These serve the two functions that are performed by the boat battery types: 1. Cranking and 2. Deep Cycle.

You might have heard of “cold cranking amps” – these are the power ratings for turning your trolling motor over when starting it.

Amp-hours are how long you can operate your watercraft at different speeds. The deep cycle battery is used for regular operation – while you are on the water.

The other variation you will find in boat batteries is based primarily on their internal structure:

  • Wet-Cell
  • Sealed
  • “Absorptive Glass Mat” (AGM)

The wet-cell (or flooded) is standard for the industry. There are six open cells; if you are experienced, then you can check, maintain and repair these cells yourself.

The novice might prefer the “maintenance free” or sealed trolling motor battery. It has fewer corrosion problems than the wet-cell.

The most advanced battery type is the AGM, which is also maintenance free. These are well-protected against vibrations and have different rates of discharge.

2. Size

Trolling motors are rated by pounds of thrust; a trolling motor of 72 to 75 pounds of thrust is comparable to 1 horsepower or 746W of electrical power. Experts recommend 5 pounds of thrust for every 200 pounds of a vessel’s gross weight.

The most popular options are 12V, 24V and 36V trolling motor batteries. A 12V motor draws 60A consuming approximately 720W. If your boat is longer than 16 feet, you might want to upgrade to a 24V motor.

3. Usage

The frequency, storage and usage of your trolling motor will also determine its life span. If you must err, it is wise to err in having too much power.

The professional fishermen might need a 36V trolling motor battery for peak performance. They might even carry 2 or 3 trolling motor batteries, along with a battery minder.

4. Maintenance

Fully recharge your battery after each fishing trip, for the best results. Batteries left uncharged or with a low charge, will be more difficult to recharge to their full capacity.

Marine trolling motor batteries operate using sulfur and lead, both of which can be hazardous to your health. The standard wet-cell battery will require you to conduct regular maintenance.

During operation, the sulfur tends to build up on the battery plates; recharging your battery returns this sulfate to the electrolyte solution. Over time, sulfur buildup (also called ” sulfation”) will decrease performance and longevity.

Wet-cell batteries can be cleaned with a “cleansing agent” to remove sulfate buildup.

You must be very careful when you check fluid levels. Make sure to work in an area with proper ventilation – wear safety glasses, protective gloves and clothing.

If you are not an expert, you might prefer the maintenance-free batteries.

5. Damage

Never drop your battery. A damaged battery could explode.

Even normal wear-and-tear from frequently bobbing on the waves could cause your battery to malfunction.

Trolling Motor Battery FAQ

Here are some helpful answers to the most frequently asked questions (FAQ):

What are some warning signs that your battery is on its last legs?

Each trolling motor battery is different, but if yours takes longer to start your motor, recharge or requires more frequent charging from an automatic charger, then it might be dying. You can do an equalized charge on a wet-flooded battery to strengthen weak cells.

What if I add GPS, fish finders and other items?

When you add more electronics to your water craft, you might want to add more batteries to ensure they function properly. It is advisable to have one battery especially devoted to your trolling motor, so you are not left stranded.

Why can’t I use a car battery for my boat?

The marine battery can handle the bouncing waves and allow you to troll for longer periods of time than an automobile battery.

Have Fun Trolling

Now you know what size battery for trolling motor, so have a great time on the water. You can rest and relax with family and friends.

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