FoxESS Community - Owners & Installers Forum

There is probably no error:
To serve a load of 150W the inverter draws 350W from the battery. The difference of 200W is the power consumption of the inverter itself.
So the math is correct. It‘s the pretty high power consumption that makes the difference. (at least for my H3-8.0).
So you draw more ...

I see something similar, and think the recorded battery discharge rate is off:

KH7 (Master : 1.41, Slave : 1.01, Manager : 1.40)
EP11 (Master: 1.005)

Stats either via the inverter screen or via modbus are inconsistent:
Battery charge total: 200 kWh
Battery discharge total: 310 kWh (but this ...