I currently have a Helix 7 MSI G3N on my console which is wired directly to a Interstate 27M-XHD cranking battery with 800 CCA and 182RC. I’m going to remove the Helix 7 and replace it with a Helix 9 MSI+ G4N on the console, add a Helix 9 MSI+ G4N to the front bow wired into a 12V cigarette plug in, then install Mega Live and Mega 360 for the units. Do I need to upside my current cranking battery or add a Lithium battery that is only for all 4 of those plus a network hub which that would be linked to my trolling motor? They would all be wired to a blue sea systems fuse panel then main wires would go to the cranking battery. I would only run most likely one Helix 9 and Mega Live or 360 at a same and never all 4 at once.
What AH size would I need if I only fish at most a half of a day to a full day then charge at the end? I do a mix of trolling with my trolling motor only which is on its own batteries and the graph but sometimes troll with the main motor on. I have limited space on my 2012 Alumacraft Classic 165 CS.
