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Trust that someone perhaps has more insight. My system in general works well. However the permanent Battery discharge by the Inverter just doesn't seem right. The system has been in operation since beginning August 2021. I have since contacted both Growatt and Hubble about this issue and they either don't know or don't want to understand the issue. As soon as my battery is 100% fully charged, it immediately kicks into a discharge, which seems to be the power needed to run the Inverter. The discharge is a round 1% per hour. At 94% the Inverter algorithm then restarts the charge mode and it charges back to 100%. Now if there was no sun that would be normal but this is during the day even when there is excess solar energy. The Solar power powers my 230V requirement, yet the battery still discharges to power the Inverter (anywhere between 42 and 60W) See attached pics. All I wish to know if that is just the way that the Growatt has been designed to operate or whether that is an abnormal behaviour of my inverter. Then there is the matter of the firmware. After my queries to Growatt they sent me 040.05 and 041.05 which I am running ever since. The noticeable change that occurred with this firmware is that the Program codes 12, 13 and 21 are now percentages and not voltages as they were before. There is a huge difference between the two of course. Neither Growatt nor Hubble have amended their documentation to reflect this change. Hubble has the great Inverter guides and it states to use Protocol52 in Program code 36 which then presets the required values. On closer inspection you will see that Program 12, 13 and 21 are assumed to be Voltage settings which they are not anymore. Now with code 21 that becomes very apparent as your Inverter shuts down when your battery reaches 44% all of a sudden. So that I changed to 20% to prevent the unnecessary shut downs. With 12 and 13 also being percentages now I am not quite sure what the voltage equivalents are for these percentages. They are 47V and 53V respectively, so what are the supposed percentages for these values. And in my case does it even matter as it is an off grid installation, i.e. there is no grid connection on my system. Appreciate any thoughts or info on this.