Anybody know where I can find out what kind of amp draw a minn kota endura 50 trolling motor has? Or maybe if they know a ball park. I'd kind of like to know how much I'm going to have to spend on a battery. I assume you can just do some calclulations using amp draw and the battery rated amp hours to figure out roughly how long you can run on your battery. Any help/ experience will be useful... thanks.