Yes this charger is for Ninebot Kickscooter ES1, ES2 or MAX G30.

Digitec description: This charger from Ninebot By Segway is designed for use with their ES1, ES2, ES2L, ES4, E22E, E22D, E45E and E45D KickScooter models. It is a complete charger with connection cable, charging unit and connection cable to the electric scooter.

As far as I understand, does not work with this model and is also not stated in the specification

Yes, according to our supplier, this charger should also work with the E25D.

It is best to contact our customer service directly so that your request can be checked individually: https://helpcenter.galaxus.ch/hc/de/requests/new

Do you think which e-scooters this charger is compatible with? I bought this as a second power cable for my ES2/ES4, but now use it as a second charging cable for my G30D, works just as well.

The Swiss plug is present.

Yes