This might help you decide o what it will do.
To calculate how long a battery will run a motor, let’s have a look at an average setup:
30 lb thrust Minn Kota trolling motor – max 30 amp draw
35 amp hour (Ah) AGM battery
and a 50 Ah battery as well
Amps drawn
Runtime with 35 Ah
Runtime with 50 Ah
Speed setting
Max
Medium
Low
Max
Medium
Low
Max
Medium
Low
30 lb trolling motor
30 amps
15 amps
5 amps
1.2 hours
2.3 hours
6 hours
1.7 hours
3.3 hours
10 hours
The table above will give you an idea of how long a 30 lb trolling motor will run with a 35 Ah and a 50 Ah battery at various speeds.
Running the motor at full speed will draw 30 amps per hour, draining the battery in a little more than an hour.
Running the motor at half speed will draw 15 amps per hour, meaning you will get 2:20 minutes runtime.
Running the motor at the lowest speed setting will draw 5 amps per hour, so you will get 7 hours of run time.
That’s not that bad!