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mletenay / home-assistant-goodwe-inverter

Experimental version of Home Assistant integration for Goodwe solar inverters
https://discord.gg/TaXyWXT
MIT License
146 stars 38 forks source link

Can't fully charge my batteries #273

Closed arkovda closed 5 months ago

arkovda commented 5 months ago

Hi And thank you for good work. I can't charge my batteries more that 92% even doe I have 7-10kW from the sun This has started the last weeks or so. from 90(I guess) to 93 it turns on and off. GW10K-ET

mletenay commented 5 months ago

This is quite normal, resp. I observe it on my 10K-ET too, it rarely reports battery charge greater then 97-98% most often it is 93-95%. It is not fault of the HA integration, it just takes value reported by inverter and it's the inverter and battery management which takes care of it. When I was investigating, at least on my pylontech batteries, it seems inverter reports lowest charge value of the battery modules. I had 5, now 8 battery modules and their charge varies a bit, some are charged to 99% some to lower values and it is the value of the weakest module reported from BMS back to inverter. And it is not always the same module which is weakest. At least that is my observation.

In any case, there is nothing we can do about it and it is "normal" behavior.

arkovda commented 5 months ago

Thank you for reply

sön 28 apr. 2024 kl. 23:50 skrev mletenay @.***>:

This is quite normal, resp. I observe it on my 10K-ET too, it rarely reports battery charge greater then 97-98% most often it is 93-95%. It is not fault of the HA integration, it just takes value reported by inverter and it's the inverter and battery management which takes care of it. When I was investigating, at least on my pylontech batteries, it seems inverter reports lowest charge value of the battery modules. I had 5, now 8 battery modules and their charge varies a bit, some are charged to 99% some to lower values and it is the value of the weakest module reported from BMS back to inverter. And it is not always the same module which is weakest. At least that is my observation.

In any case, there is nothing we can do about it and it is "normal" behavior.

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