Hi,
I have exactly the same problem with a Pylontech batt discharging to 0%. I have contacted Growatt support in China but no usable feedback until now.
Nobody in this forum mentioned which firmware is in use. I still have 067.01.104.
Anybody updated to the 'silent' firmware ? I guess in bypass mode the consumption is mainly caused by the fans. If they run slower, the overnight consumption
should drop.
Anybody with a more new firmware ?
BR, Oliver