I have had an issue with a victron and pylontch battery 2 nights in a row after loadshedding. After loadshedding ended it switched to the grid then straight back to the batteries. After trying to troubleshoot i saw that the input voltage from Eskom was only 206v. I believe the inverter wont use the grid until its higher and stable. The inverter switched to Eskom and started charging the batteries only once the input voltage went above 209. Still to low but it accepted it. Over the last hour the input voltage has climbed to 214v. The same happened last night after loadshedding but i didn't know about the voltage thing. Maybe someone qualified can comment on this.