Trolling Motor Battery Calculator

When a battery has a high voltage it means it has high power output. Motors draw different amounts of current from the battery depending on the motor size and speed it is turning.

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Your motors current draw depends on the speed you set it to and how heavy your boat is.

Trolling motor battery calculator. In order to calculate an estimate of how long your current or soon to be motor will last you divide the AH rating and divide it by the amperage draw. 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 useYou simply divide the total amperage hours by the draw of the motor. For 24V and 36V systems you will need to connect 2 or 3 batteries in series.

An electric battery with a 115 Amp Hour Rating can beat a 100 Amp-hour rated battery in terms of endurance. More batteries of the same. The equation we need looks like this.

The voltage of your trolling motor will determine how many 12 volt batteries you need. 23082020 To calculate how long a motor can run on the water you have to take your batterys amp hour rating and divide it by the amp draw. Its a good idea to use the maximum draw used for higher speeds.

6 hours X 20 amps120 amp hours. 04022021 After you have that figured out it is time to do a little math. 19062019 If your trolling motor is your primary means of propulsion then we recommend opting for a higher Ah system that your budget will allow such as the 100Ah battery compared to the 54Ah battery.

Battery or two 12V batteries in series. Total capacity of the battery. If your battery has 100Ah capacity and your motor draws 20 amps of current you can calculate its run time by dividing 10020 5 hours.

A 12V trolling motor requires just one 12V battery. 24062020 Trolling motors are available in three different voltages. 06032018 For trolling motors youll want to get a deep cycle battery.

Heres the math to calculate run time. For instance if a motor delivers 30 amps at medium speed with a 100-hour battery your run time is most probably around 33 hours. So a 36v trolling system produces more power than a 12v system but its also bigger in size.

Your battery will wear out over time. However if it is drawing 40 amps then the battery would last for 25 hours. In order to approximate how long a certain motor will run on the water you simply take the batterys amp hour rating and divide it by the amperage draw.

12v 24 and 36v. The max amp draw of your battery. 22072020 In order to break it down into more simple terms a battery that has a 100 amperage hour rating can actually give your trolling motor 25 amps of power for a total of four hours.

Total max amp draw of your motor. The pounds of thrust on the trolling motor and speeds faster than the lowest setting will drop that time dramatically. If a trolling motor runs at low speed and pulls solely four amps the battery will last up to 100Amp hour rating4 Amps 25 Hours.

36V motors require either a single Pack 36V battery or three 12V batteries in series. Max amp draw of your trolling motor should be less than. Small size and low weight are the features you should check when buying a battery.

AH AD run time. Since trolling motor batteries are rated in amperage per hour AH we can do a little number crunching to figure out what were looking for. 36v trolling motors use three deep cycle batteries 24v uses two batteries and 12v uses one battery.

So for example if we estimate that our average trolling time is roughly 2. 60 minutes Run time for your trolling motor at maximum power setting. Mighty Max Battery ML18-12 12V 18AH CB19-12 SLA AGM is the option that is worth your attention as it can meet both of the requirements.

Here is a graph to about trolling motor battery run time. Age poor maintenance and over discharge will contribute to it no longer being able to deliver the rated amp hours. Determine the amp draw of your motor.

If the only information given by the manufacturer is watts you divide watts by the voltage of the battery to calculate. If instead you wanted to use this particular battery for ten hours you could use it at 10 amps before itll lose a charge useful for those longer trips you might want to go on. The higher the amp hours or Reserve Capacity the longer it will run your trolling motor.

A typical mid-sized car battery 60AH 600CCA will be able to power most trolling motors on low speed for about 105 hours until fully discharged. 31032021 The trolling motor has a light weight regardless of being powerful enough. If you use your trolling motor at lower speeds you will have a significantly lower current draw and much longer run time.

22042020 If you use the trolling motor for 6 hours at average 50 load of 20 amps the trolling motor will then require a battery load of 120 Ah. This will give you an estimated battery life for your trolling motor. 6 hours X 20 amps120 amp hours.

48V motors require either a single Pack 48V battery or four 12V batteries in series. With this information just divide the amp hour rating on your battery by the amp draw of your motor.

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