I run four 12 volt batteries in my coach, three are 180 AH and one 60AH..All sealed, deep cycle.
After reading this article: www.smartgauge.co.uk/batt_con.html
I think I better switch to other than straight-from-the-load, parallel wiring, to the diagram in method #2.
It appears as if my number one battery, the 60AH, is taking a real beating.
Any thoughts from the "Battery Gurus?"