TheChamp
Honorary Master
I have connected batteries for a long time since loadshedding but I once melted a terminal and my eye was hazy for a while from the unintentional welding, it won't kill you but it's not nice, and it makes you look like an amateur.Or be a cowboy like some of us. So used to zapping myself and sparks you wind up not caring. Can't kill you on the battery side especially. Voltage is tiny.
I redid most of the wiring in my DB with the inverters on supplying the house as normal. I don't recommend but it's not the end of the world if you have to lol.