Have you managed to get sorted on the pylontech low battery issue?
so from my side i can say that you’ll meed rj45 cable from the pylontech to the inverter. The inverter’s setting 5 is set to Pylontech whichnhas really low dc volts. Essentially Setting 5 just changes the bulk, float and cut off voltages for the battery.
the inverter on the other hand also tries to determine the battery’s soc from voltage, unless you have a cable from battery to the invertet whereby it then uses soc percantage from the pylontech, which is more accurate.