Re-post from the DESS release thread:
My MPPT RS450/100 temporarily interrupts the charging process when the battery is near full.
I have a large pack so the Multi's are still charging 2kW at that time but the MPPT RS stops for a few minutes before continuing. Before and after that one stop, all is working fine. Either help charge the remaining % or invert.
So far, it takes about 5mins to recover. Ramping down the panels. Turning to -10W for a while. And firing everything up again.
Can not be sure but it seems to be related to the switch from bulk to absorption charging. For both AC-PV as well as DC-PV feed-in to grid is enabled. I'm using DVCC with 40kW of Pylontech packs.