Question about Bluetti AC200 Max

We currently have a 25-year-old freezer with a capacity of 450 litres running on the AC 200 MAX. The consumption is approx. 70 - 80W according to the display - -> this is of course only when the compressor of the freezer is working. The fan of the Powerbox starts sporadically during this use and makes noises like a larger fan on a computer. Subjectively, the noise from the box is no more disturbing than that from the freezer itself.

You can hear the fan, but it is by no means loud.

Note of course that if the device is charged with a high power via solar, the fan also switches on, but this is moderate in terms of the noise level.

No, the unit is very quiet. Only when a large device is connected does it hum very quietly, like the fan on a computer.