Trolling Motor Battery
Posted: Fri Feb 22, 2019 1:23 am
When running a deep cycle battery, I know that current draw can be used to calculate run time as a factor of Ampere-hour of a battery. I also know that batteries should only be drained down to about 50-percent.
If running a trolling motor, should I calculate run time assuming that I can use all of the Ampere-hours listed on the battery?
Or, just half of Ampere-hours?
According to this site (https://www.trollingmotors.net/blogs/se ... r-run-time), if I have a 100-Ah battery and a trolling motor that draws 20 Amperes, then:
100-Ah rated battery / 20 Ampere load = 5 hour run time
Is this realistic?
Does this mean that the battery will be dead and drained below 50% after five hours?
Or, does this mean that after five hours the battery will be half drained?
Thanks.
Edit:
In real life, discharge rates and battery charge last for different lengths of time depending on different factors. It seems that battery Ah rating is at 20 hours at a 5 Ampere draw. I'd be pulling at least 7-Ampere with a trolling motor, and twice that (at least) if on high speed. When trolling at a reasonable speed, how many AH would bee needed to get, say, five hours of continuous trolling with a continuous run?
What pound thrust is your motor?
If running a trolling motor, should I calculate run time assuming that I can use all of the Ampere-hours listed on the battery?
Or, just half of Ampere-hours?
According to this site (https://www.trollingmotors.net/blogs/se ... r-run-time), if I have a 100-Ah battery and a trolling motor that draws 20 Amperes, then:
100-Ah rated battery / 20 Ampere load = 5 hour run time
Is this realistic?
Does this mean that the battery will be dead and drained below 50% after five hours?
Or, does this mean that after five hours the battery will be half drained?
Thanks.
Edit:
In real life, discharge rates and battery charge last for different lengths of time depending on different factors. It seems that battery Ah rating is at 20 hours at a 5 Ampere draw. I'd be pulling at least 7-Ampere with a trolling motor, and twice that (at least) if on high speed. When trolling at a reasonable speed, how many AH would bee needed to get, say, five hours of continuous trolling with a continuous run?
What pound thrust is your motor?