Lets assume my deep cycle battery has an RC rating of Divide that by 2. Lets assume my motor is the Endura 30 mentioned above, and I troll at speed 2, which is 10 amps draw. Reality is likely to be less. If the battery is old, damaged or not fully charged then you will not get the rated amp hours from it, reducing your runtime. Significant cold or hot weather will also reduce your runtime.
If other devices are using the battery, such as your fish finder or electric downriggers, then that will reduce the power available to the trolling motor — thus reducing your runtime. Needing to use your trolling motor at a higher power for some period of time, say to get to your fishing spot or to deal with wind, then your runtime will go down.
This assumes ideal conditions. Well, here are some tips which will help. One way to do that is to turn off anything not essential. This includes lights, fish finder, and so forth — or better yet have them on a different circuit and battery than your trolling motor. Another strategy is not to use your trolling motor to fight the wind, instead only troll with the wind so you can run the motor at a low setting. When it is time to go against the wind fire up your main motor instead to reposition.
Replacing it with a new one will give you a longer runtime. About every 3 years I replace my trolling motor battery because I no longer get the runtime I want. As you have probably guessed a bigger battery with more amp hours will increase the runtime of your motor — all else being equal. Something to keep in mind when you have to replace your battery anyway.
Adding more batteries is another obvious way to increase your runtime. Two batteries will last longer than one. Some people have the two on the same circuit in parallel, others have a switch they can use to select one or the other. In addition trolling motors with a higher thrust rating tend to be more efficient and will have a lower amp draw for a given prop speed.
So upgrading your trolling motor may add some significant time to your runtime. If you are thinking about this route I suggest contacting the manufacturer to get amp draw numbers on both your current and possible future models to see how much of a difference this will make.
Many people have looked into ways to be recharging their battery while out on the water fishing. Some have looked at solar panels, others using the alternator in their outboard, others small generators. Solar panels may be hard to mount on your boat, and of course require sun to work. Just like the other numbers we have covered, the numbers for a solar panel are often given for certain conditions which are usually a best case.
Reality is often different. As far as using your outboard or a small gas generator to charge your battery, my opinion is that this mostly negates the advantages of using an electric motor in the first place — like having quiet, minimal vibrations, no motor fumes and not having to mess with gas. If you are seriously looking at this then I think there are better alternatives. With this information, just divide the amp hour rating on your battery by the amp draw of your motor. This will give you an estimated battery life for your trolling motor.
Submit Search. Close search. Your Cart. Your cart is currently empty. Newport Vessels Hoorag Sun Scarf. Kayak Motor - NKS. Checkout Continue shopping. Product Selector Tools. Customer Support. However, this is not always the case and sometimes the amperage draw will need to be calculated from how many watts the motor draws, which can also depend on how many pounds of thrust the motor has.
To find out the amperage draw of your motor, you can divide the wattage of the motor by the voltage. For example, if you have a watt, 12 volt motor, then your amperage draw would be 29 amps.
Knowing the amps drawn from the motor, you can then work out the run time of the motor using the amperage hour rating from your battery. To find this out, you can divide the amps drawn by the motor by the amp hour on the battery. To find out how long your trolling motor and battery will last it can be important to know the amp hour rating of the battery and the amperage draw rating of the motor.
You can then divide the amp hours Ah by the amps drawn to calculate the expected runtime of the motor at top speed in mild conditions. You can increase the runtime of your motor by reducing your speed if you have a variable speed motor. The type of water you boat in will also likely have an effect on your speed and runtime, which is why the runtime calculated from the amp hours and amps drawn is usually for calm, ideal conditions.
In current or rough water, your motor will usually have to work harder to deliver the same speed as in calm conditions. Kayakfisherly is audience-supported. When you buy through links on this site, we may earn an affiliate commission that we use for site maintenance. Learn more. Knowing how long your trolling motor battery would last is indispensable for a productive time on the water. If you already have a trolling motor battery , this article would enlighten you on how to go about calculating how long your battery can power your trolling motor.
As well as give you a few maintenance tips. If you are about to make a purchase decision? We got you covered with necessary info on a trolling motor battery life. How long your trolling motor battery would last depends on a number of factors. A rundown on these factors are below:. The quality of your battery would determine how long it would last. This boils down to what type of battery?
It is a fact that deep cell batteries are the best but, what type of deep cell battery? Are you using an AGM, a flooded cell, or a Gel battery? These battery categories are all excellent, but an AGM or Gel battery is best if you can foot the cost. Using a dual-purpose battery is a good choice. Although, it cannot do as much as an individual starter battery, and a deep cell battery no matter how impressive its features are.
How fast it depreciates is dependent on the quality of the battery, and healthy maintenance culture.
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