Hello, I can't answer the question in minutes, also because I keep stopping in between to move furniture. In square metres, my answer is that I can manage about 120 square metres without any problems. Specifically: I had fully charged the battery. Then I vacuumed the flat (no carpet) with the hard floor nozzle. I then cleaned a sofa with the furniture nozzle. After that, the battery still showed 2 of the 3 charging strokes.
Subjectively, the floor had been cleaned very well. I also found that the hoover was relatively quiet.
I have only had the vacuum cleaner for a week, so I bought it before the discount campaign. My bad luck, but maybe your good luck now.