i have a motorguide 71lbs freshwater series t/m 24v. is ther any fact behind minkotas adds of longer battery life with maximizer?most of the time we flat line troll,i have two group 29/31 series batteries,biggest ones wallyworld has,i have yet to go all day!i can make 9 hrs working them.i know that is a lot but i would like to do better,am i asking to much?if anyone has any info or hard facts such as data on current draw,amp,rating,to motor i would appreciat it.