When using the the BMW 9.6kW flex charger, what is the "Reduced" kW at the Mini SE 2023? I heard the Maximum is 7.4kW (limit of the onboard charger). I'm charging from a battery backed off grid solar system and 7.3kW is too much for the inverter. 3.8kW is fine.
Some chargers can be setup to dynamically limit current to match solar power. If you are parked all day, this would be preferable to charging batteries then charging your car from those.