Hi, first i need to explain my installation. I have an MP2 ac-coupling mode. I have not mppts or any dc charger connected to my battery. No ac in loads, all loads in ac out. And several microinverters in ac out. The charge of the battery is made by MP2 ac/dc charger with the energy generated by microinverters (not more than 2.5kW). ESS assistant configured. BAttery has bms but NOT communicated. The “battery monitor” responsible is an smartshunt (300A version). Battery is 15kWh one. (big enought)
ESS is configured to charge up to 55.2v
As I am out of house for several weeks, just before goint out I configured the DVCC activating the “limit managed battery charge voltage” to 53.6v
But… it is not limiting that, at least all days.
Here you have the day before yesterday graph. (I will put more graphs afterwards)
As you can see, the charge has been go on charging even above 53.6V
Here, yesterday graph:
Here, no problem, all day at 53.6v
Here, today’s graph:
Again, MP2 is charging battery over 53.6v, up to 55.2v.
Why is not makeing its job the DVCC limit battery charge voltage?
It is not necessary to go up to 3,45v per cell everyday when you are not at home and you dont want to balance cells everyday.
Why is not working this limit? May be I have another thing misconfigured?
Regards,