I have one
solar panel, and one controller feeding one
battery, to charge both
batteries, i switch to "both" this charges both
batteries. I wanted to back up the system, with another
solar panel, and another controller, feeding the second
battery, so that both batteries would charge independently, and if one system packed up, I still have the other important, because I intend to spend a long time cruising when I leave.
What I am wondering is, if I do that, will it still be ok to switch the battery switch to both, which will allow both individual solar systems to be in contact with each other, I am presuming it would be ok, but just wondered if there is something about it I should know.