Visited on April 6 without charging.
The chargers are in the small parking that seems to be reserved for the customers of the shops next to it. The chargers are probably open to all since they are installed by the Elektrizitätsgenossenschaft Hermetschwil-Staffeln.
The DC charger is indicated out of service in the Evpass and on the screen.
The AC charger seems to be working, but there are no instructions on it.
Based on the signage on the ground, it looks like the standalone AC charger is meant for the car sharing, but it's listed in the Evpass app and anyone can start a charge on it, potentially preventing the car sharing from using it when it returns. I have no idea if there is actually a car sharing, because it wasn't there at the time.