hi group,im currently fitting out my boat,im considering using 2 big lithium battery bluetti or jackery,im thinking of having a decent solar array,i would still have minimal 12 volt system for starter and water pump/gulper,anyone do this,are there many negatives ,good points ,they are pretty much ready to go,dont need an electrical engineer to fit,using a pair you could charge from solar in different directions ,unlikely for both to fail,easy to upgrade ,long life guarantee ,and I could remove one in winter and charge it at work or in the car,also would it be possible to feed a fuse box for 240 volt side,thanks