Using a motor on lower speeds will increase battery life.
Trolling motor battery life calculator.
Marine agm deep cycle batteries 4 to 7 years wet or flooded batteries 1 to 6 years gel batteries 2 to 5 years.
Please note that a larger trolling motor doesn t translate to a longer boat.
Using a variable speed motor helps to regulate the speed of the trolling motor.
If you need seriously long run time for your smaller boat it may make sense to buy a 24v or 36v motor.
How to calculate battery life.
So it ll run various power hungry devices as needed on a boat while the battery still holds a charge.
Battery amperage hour rating and a motor s amperage or watt draw.
Buy a larger motor.
Battery life calculator so if you have a 24 lb thrust motor and your battery size is 33ah you can go at high speed for 1 2 hours or about 72 minutes.
You just have to take note of your marine battery s amperage hour rating and amperage draw.
Calculating your marine or deep cycle s battery s life is not as difficult as you think it is.
After the 72 minutes your battery will still have about 10ah left in it but if you want it to last you will need to stop motoring and charge it back up as soon as you get home.
However this is only true for 12v powered trolling motors.
A bigger boat length would require a higher voltage battery say 24v or 36v.
But normal lifespan expectations for trolling motor batteries are as follows.
The amperage draw of a trolling motor increases as the speed of the trolling motor.
Larger 24v and 36v multi battery trolling motors are able to provide the same thrust as smaller motors with less amperage draw which results in longer run times.
A better estimate of this runtime can be achieved by dividing the max amp draw in half and using that answer in the equation.
Then divide the battery s amperage hour with its amperage draw.
When calculating trolling motor run time there are two things you need to know.
Use a calculator like this one to determine the wire gauge you should be using.
A trolling motor battery powers the saltwater trolling motor itself along with other appliances on the boat if you wish it to do so.
Marine batteries are rated by amperage hours.
Using a motor in strong currents winds or heavy loads will shorten the battery life.
It s either a deep cycle or dual purpose battery with deep cycle capabilities.
Many battery boxes come with additional accessories as well such as battery life monitors usb plugs and other nice add ons.
A trolling motor battery life is something that manufacturers do not really offer a warranty for since it.
Trolling motor batteries may last between about 2 6 years depending.
This unit measures how long a battery can maintain a consistent amperage output.
The guy told me that this battery would be more than adequate for my motor.