Quick question - in silent mode charge on the AC180, https://youtu.be/9CO__rNBH0Y?t=103 - we can see the 270 watts of the AC supplied power get knocked down to 150 or so, once solar is plugged in. So, both in total hover around 300 watts or so.
Will it do the same thing to prioritize solar over AC while simultaneously charging standard 1000 watt AC mode and solar? (Our Priuses easily handle a 1000 watt inverter thanks to the hybrid battery, and the 12 volt 45 AH starter battery).
We have a bunch of us who run a solar panel to charge up the a 12 volt car fridge, and want to keep that powered - and use a Bluetti to do that. But have no interest in the Bluetti Fast Charger which will only charge at 500 watts due to the 500 watt limitation on the PV DC input (plus we would have to plug and replug back and forth).
I’ll leave @BLUETTI to answer the simultaneous part of your Q. however;
If you were to charge in standard mode at a higher wattage when the AC180 is in a low State of Charge (SOC), it accepts this until it reaches around 80%. Then the BMS slows down the charge rate until it is full at approx Silent mode rates. In other words charging is not a constant value throughout the entire charge cycle.
It therefore stands to reason that adding extra charge via solar once this slowdown occurs only prioritises solar, topped up by AC input and to the limit of acceptable charge.
I charge my AC180s in Silent mode all of the time and they stay at around 270-280W the entire time of charging until 100% is reached. In Standard mode it slows down at 80%. (variable depending on ambient temperature.)
You don’t mention the SOC re your Q.