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Battery Run Time: How Long Does A Trolling Motor Battery Last?

The fish may be biting in the middle of the lake, but a dead battery can keep you from the action. It can also strand you far from shore.Dead batteries can turn a great time into a bad experience quickly. There's never a right time for this to happen, but it is preventable.

Learn about trolling motor battery run time and how to get the most out of your power source and avoid frustrating setbacks. Our ultimate battery guide will show you how.

​How long does a trolling motor battery last?

It depends on the quality, age and how well the battery has cared. You can estimate how long the battery will run the motor on a single charge.

Steps for calculating trolling motor battery run time:

  • Find the amperage hour rating of the battery.
  • Locate the amperage draw of the motor you're using.
  • Calculate using this easy method.​

You can find this information from the manufacturers of each. If you don't have the user manuals, most companies offer the information online.

If your battery is rated at 200 amperage hours and the draw of the motor is 25 amps, you may have 8 hours of consistent use.You simply divide the total amperage hours by the draw of the motor. It's a good idea to use the maximum draw (used for higher speeds).

Here is a graph to about trolling motor battery run time.​

Trolling Motor Battery Run Time

Also here is a video explanation for you.

Other Things That May Affect Battery Life​

Calculation of the battery run time is always approximate. Weather and water conditions can also affect how much time you'll get out of it.

There's always that chance that the motor could have a higher amperage draw when running at higher speeds or against the wind.​

​Trolling Motor Battery Types

The two basic types of boat batteries include cranking and deep cycle batteries. The cranking variety is built to deliver a burst of intense power. They are generally used for starting the main engine. The alternator replenishes the power while the motor is running.

Deep Cycle batteries are the recommended choice for trolling motors. They feature a reserve capacity that depends on periodic charging for replenishment. By design, they are superior for withstanding deep cycling.

Cranking batteries are not built to hold up to the rigors of powering a trolling motor. Unless a cranking type is designated as a dual purpose battery, use with a trolling motor would result in overheating and failure.

It's important to understand the different uses and limitations for each of these boat battery types.​

Sub-types​

Both cranking and deep cycle batteries come in three different sub-types. These are

  • Wet-cell battery
  • Standard flooded battery
  • Absorptive glass mat battery (AGM)

Wet cell batteries feature six cells which are open and constructed with standard lead plates along with an electrolyte. You can service this type yourself.

They have a greater charge storage capacity than the absorptive glass mat type. The disadvantage is the danger of increased corrosion due to acid spills.

Maintenance free, also known as a sealed battery can't be serviced by the owner. There is no way to access the cells. The absorptive glass mat is included in this category. The amp rating is lower for AGMs than for wet cells.

While these are not owner serviceable, there is less chance of corrosion or accidental acid spills and they are less susceptible to vibration. Another advantage is that they discharge at a slower rate and recharge faster.​

Battery Life Durability​

Charge durability refers to the number of hours that you'll have before the battery is depleted of energy. Knowledge of the proper handling and maintenance practices can delay the inevitable results of the aging process.

Applying this knowledge can leave you with a more dependable power source. We have some tips to increase charge durability of your trolling motor battery. Here are things that can improve your battery charge durability.​

Use The Correct Battery​

Deep cycle batteries are more expensive than the cranking type. Avoid going with the cranking type because it will ultimately fail. It cannot hold up against the demands of a trolling motor.

Deep cycle batteries are designed specifically for the trolling motors and other types of accessories. They feature a sturdier construction with heavier plates. Cranking batteries can't be used as substitutes for deep cycles.​

Here is a detailed article how to charge a deep cycle battery properly so you can have long battery life.​

How To Take Care Of A Trolling Motor Battery

How to take care of a trolling motor battery

Regularly maintenance batteries have a longer life and greater charge durability. Take the following steps to keep your battery in the best possible condition.

​Keep your battery charged

Don't allow your battery to become fully depleted because this weakens it and shortens the life span. Sulfation levels drop lowering the longevity when they are allowed to sit uncharged.

Batteries produce electricity through a chemical reaction that includes sulfuric acid and lead plates. These create the direct current for power.

The sulfate ends up on the plates, and the capacity for producing current is decreased. Recharging directs sulfate into the solution so it can continue to generate the chemical reaction.​

Clean Your Battery​

Buildups of sulfates on the plates happen over time. You have to do maintenance your wet cell batteries with a cleansing agent or battery equalizer. It removes the buildup of sulfates and gives the battery extended capacity and life.

Clean Corrosion

Corrosion happens from electrolyte leakage and is more frequent when the battery is overcharged or hot. It can also happen during the charging process.

Clean the corrosion from the terminals by using this process. It includes the formula for the cleaning solution that you make at home.​

Needed supplies​:

  • Hot water
  • Baking soda
  • Toothbrush
  • Heavy duty rubber gloves
  • Cool water
  • Petroleum jelly (lubricant)
  • A clean cloth.

1. Wear protective rubber gloves to avoid getting corrosion on your skin.

2. Combine 1 tablespoon of baking soda and 1 cup of hot water.

3. Dip the brush into a hot cleaning solution. Scour battery cables, clamps, and terminals until corrosion is cleared.

4. Rinse cables, terminals and other surfaces of the battery with cool water. Remove all corrosion and baking soda solution.

5. Dry battery cables, clamps, and terminals with clean cloths.

6. Apply lubrication to battery terminals, clamps, and posts.

Maintain Wet-cell And Flooded Type Batteries​

Check the fluid levels regularly. Keep them filled to the proper levels without overfilling. Here is how to proceed.

1. Pop the caps up.

2. Inspect the electrolyte fluid levels. Add distilled water slowly until the plates are covered with one eight of an inch of fluid.

3. Keep fluid levels one-quarter of an inch under the splash ring located at the mouth of the cell. It is needed to allow the hot electrolyte solution to expand.​

Choose The Right Charger​

Multistage chargers are the most reliable types. They provide power in stages which helps to extend the life of the battery without overcharging. Choose a type that shuts off when the battery is at full charge for optimal results.

Charging Stored Batteries​

During the off-season, check the charge on stored batteries. Keep them charged with bi-monthly charges and avoid allowing them to sit uncharged. This increases the lifespan and maintains battery capacity for longer.

Recharge battery to full when it reaches 75% of its capacity. Use a hydrometer or voltmeter to check the status of the charge. Extended storage temperatures are ideal at 40 to 50 degrees Fahrenheit.​

Conclusion​

In this article, you have learned about trolling motor battery run time.

Getting the most out of your trolling motor battery starts with having useful information and understanding how to use it. First, choose the right type. Next, know the steps for maintaining and cleaning your battery to extend the life.

This will also increase the charge duration for extra hours of use. Distilled water, baking soda, and petroleum jelly are the main ingredients needed to keep your battery in the best possible condition. Follow the steps in this guide to reaping the benefits.​

You may take a look here to choice various types of kitchen cookware.

Deep Cycle Battery Charging Guideline: How To Charge A Deep Cycle Battery Properly

Get out on your favorite river, lake, and other waterway and have yourself a blast

Boating is one of the spring and summer pastimes that offers you many options for having fun. The things you can do with a boat are endless. People Ski, Parasailing from the back of one, and of course fishing.​

The Deep Cycle Marine Battery is the unsung hero of summer vacation, fishing outing, and exploring the great outdoors on lake, river, and tributary. But, it needs care and feeding to make sure it will be in its best condition when you need it most.

So the first thing you need to know is how to charge a deep cycle battery properly.

​Start With The Right Charger

A Deep Cycle Marine Battery is not like the battery in your car.​ The basic chemistry of a car battery and a marine battery are the same. However, The Deep Cycle Marine Battery is an advancement over traditional marine batteries and the car batteries.

It is often called a hybrid as it has both the characteristics of a quick discharge and high amperage. But, it can also provide a long-term output as well.

​Deep Cycle Marine batteries can sustain up to 80% discharge and still be recharged again and again. But a car battery can only handle a 20% discharge.

How To Charge A Deep Cycle Battery​ Properly

​There are two methods. One is to charge the Deep Cycle Marine Battery in place and the second is to remove the battery from your boat and use a portable charger that you connect directly to the Deep Cycle Marine Battery.

​Best Way To Charge A Deep Cycle Marine Battery

The best way to charge a Deep Cycle Marine Battery is to get a charger designed for the task.

Just connect the clamps according to the directions, and it's auto-sensing circuitry monitors the environment and the Deep Cycle Marine Battery to provide a fast charge without damaging your battery.

​Here's how to use a portable deep cycle marine battery charger

1. Always before charging a battery in using the charger is best to refer to the manual that came with both the battery and the charger.

2. When using a portable charger disconnect your Deep Cycle Marine Battery from your boats electrical system.

3. Make sure you're working in an area with good airflow as when you're charging a battery gasses may be released.

4. Clean and inspect the battery terminals. Remember to wear protective I covering and gloves as the corrosion may contain sulfides which can irritate both eyes and skin.

5. The Deep Cycle Marine Batterires are sealed units usually and require no topping off.

6. With the charger turned off and wearing rubber gloves connect the red clamp of the battery charger to the positive battery terminal. You can identify this by the "+" marked nearby. The Newer chargers sense polarity and will let you know if you got it reversed.

7. Next, connect the black clamp to the terminal marked with the "-" symbol.

8. Plug your charger when appropriate wall receptacle. This will usually be the domestic current of 110 to 120 V AC.

9. On the Chargers front panel has today's battery chargers can handle a variety of battery types. You want to select the one that matches the type of the Deep Cycle Marine Battery that you have.

10. Press the start button and allow the battery to charge. The unit will automatically charge the battery and notify you by indicator light when it's finished.

11. Turn off the charger, unplug it, and disconnect the battery for replacement on the boat or storage.​

How to charge a deep cycle battery properly

Is it okay to use a trickle charger on a deep cycle marine battery?​

No, A car battery charger on trickle charge is too low to do the job. 10 amps are needed for Deep Cycle Marine Batteries. They have to be overcharged to 106%.

So, make sure you choose the correct charger for your battery. In this way, you charge your battery correctly and prevent damage and ensure a long life.

How To Charge A Deep Cycle Marine Battery On The Water​

First of all, find out the right charger for you that hooks into your boat's electrical system and runs off the motor while it is running.

You just wire it into your boat's electrical system according to the enclosed instructions, and you don't have to worry about overcharging or undercharging ever again. Also, this charger will charge your Deep Cycle Marine Battery 2X faster than rates that others chargers will.​

If you compare the Battery specs with this charger, you see that is compatible with most Deep Cycle Marine Batteries and has the needed sensing circuitry to do the job right.

Also, you have an off-grid way to charge it. This is the perfect charger for charging your Deep Cycle Marine Battery while you on the water and can't get it done the usual way.​

How To Charge A Deep Cycle Marine Battery Fast​

Sometimes, you may want to charge your Deep Cycle Marine Battery faster as you need the battery ready sooner than waiting the standard charge time. You can do this by either boosting the charge to 20 amps.

But, this will reduce the life of your battery. A better way is to use the Schumacher, which can give better charging times due to its smart circuitry that can regulate the current better. This is the best solution.

However, there is a third way, and that is, only take the charge to 90% instead of 100%, because the remaining 10% of charge takes the longest amount of time to complete. However, later, you should do a full charge normally.

How To Charge A Marine Battery​

Well, the process and recommendation is almost same.​ But there are few things you have to know about. Here is the detail instruction about how to charge a marine battery.

Post Summary

​Today you have learned how to charge a deep cycle battery properly. They have 80% discharge rate over the 50% rate of conventional marine battery.

Here is a video about how to charge a deep cycle battery properly.

You've seen the proper way to charge one using a portable charger and how you need to rely on the technology to do the job correctly. However, you can fudge the process by only charging to 90% of capacity to save time.

Finally, we even threw in a way to keep it charged without resorting to the Grid and raising your electrical bill. All in all, you have the perfect solution to keep your boat's battery in tiptop condition for water sports, relaxing, and fishing.

We hope you enjoyed this article and you can find more on this site as well. Until we see you next time, "Happy Boating!"