I have a johnson evinrude troll motor it is a 12-24 volt. look on the side of the foot petal there should be a switch labeled 12-24 toggle switch
I have 2 batteries for 24 volts it will run the troll motor a good 15 hours steady running
and will go great in a high wind it has a light built in the head for night operation.
look for the model that will help the most. To tell you if it is 12 or 24 volt but you can run either
one on 12 volts..