Unplug the power supply first or the battery first
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
Disconnect the battery and the power supply (if you can find where it''s plugged in, somewhere near the brown box, unplug it.) Unfortunately your picture of the label is not quite clear enough to read. But the first two wires on the left of the power strip say 16 VAC, so that''s the power supply that''s plugged into the wall somewhere, and the ...