Visited on June 8 without charging.
I have no idea who those chargers are supposed to be for. The fact there's a picture on Swisscharge must indicate it's somehow publicly accessible, but on location there's zero indication, and it's not even very close to the Harley-Davidson shop. That entire gravel parking must belong to them.
The chargers don't have QR codes and I didn't try them, but I assume they are the ones visible on Swisscharge because it's those from the Swisscharge picture.
There are also chargers on the south side of Harley-Davidson, near the other companies of the business park. I didn't investigate closer are those are not visible in charging apps.