I have a multiplus II 12/3000/120-32 230V which I get increasing AC loads in line with increasing charging. At full charge 120A, I have approximately 110w consumption on AC-out. I have physically disconnected cables from AC-out 1 and 2, but still show the same result. No external current sensor connected. Anyone else who experiences this or has the same Multiplus II who can verify my findings, it would be of great help.