I have an ESS system with 3 BYD 10 kWh and PV Inverter in AC out. I have set the ESS mode "Optimized (With BatteryLife)". The system has been working properly for months, with the strategy to take as less energy as possible from the Grid.
For a couple of days, the system has changed its behaviour (without changing any parameter). Now the battery has been permanently charged for the last two days.
I wonder if this is a battery maintenance strategy, in order to keep its SOH as higher as possible. Otherwise, I see no reason for this behaviour.