I have a 24 volt deep cycle battery system with a built in 3 bank charger, for my trolling motor. I cant park the boat at home, and where i store it has no electric power for recharging. Any suggestions on a power source, i am out about 2 or 3 times a month on Grapevine. For reference the boat is Bass Tracker 175, with a 80lbs thrust trolling motor. Thanks in advance for any advice.