Question about Xiaomi Essential

For Switzerland, this depends on age:
from 16 years old : no driving licence required
for 14-16 years : category M driving licence required
This applies to eScooters up to 20 km/h

I think it is only necessary from 30km/h

No, you don't need a driving licence in Germany for this scooter.

No, no test necessary. As soon as the battery in this vehicle is at 50%, it only travels at approx. 12 km/h