I have a mk 7 transit with 2 battery system. I am wanting to add a leisure battery for my window cleaning (pump and electric reel)
I have heard adding a voltage sensing split charger can screw the ecu. Standard, it uses a split charger of some kind. Don't know if its voltage sensing or not.
I could just piggy back a leisure battery to my aux battery and let it charge that way. It would take power from both batteries thought. My idea of using a leisure battery, is to stop it draining all the time.
I could buy a split charger and connect direct to cracking battery. Not sure how that would work having 2 split charge systems.
What do you guys do with a dual battery system when adding a leisure battery?

