I bought a single bank charger last year when I bought my boat. im looking to upgrade my fishfinders and my trolling motor to a couple hds units and 80# 24 volt i-pilot mk. Do i need a different charger? Also I know my outboard charges my cranking battery when its running. Is there some way to charge the other batteries the same way? I currently have a 12 volt trolling motor and hb fishfinders at console and bow all from 2006 when the boat was new. Its a lowe sea nymph aprox 15 ft. in length. Is 80 lb thrust too big? The boat has a old round glass style fuse bank under the console does this need to be upgraded to something else as well? I know too many ???? thank you in advance for any help on any of my ??