I found this location listed on Kostad's Portfolio https://www.kostad.ch/en/portfolio/volvo-garage-engeler-ag/
With the Garage Engeler in Frauenfeld, we were able to realise our first large project with a Unity 180. The VOLVO garage is thus consistently taking the step of enabling its existing and potential customers to use our Charger for fast charging. Triple win, everything explained in space to potential customers, the charging needs of the garage are covered and public charging generates revenue.
The first experiences with the Unity Chargers are particularly impressive. The current all-electric VOLVO, charge significantly faster than comparable charging stations. 1000 VDC as well as a peak charging capacity of almost 150kW remain unrivalled in this product segment. The test vehicle from Volvo had a charging capacity of 150kW, 30kW could still be provided by our Unity 180.
The article mentions a Unity 180, installed in 2021.
But when I visited back in June 2023, it was actually a Unity 300, with build date 2022-06. We see from the portfolio picture that the unit was at the same place, but it's clearly not the same.
In my historical data, I see the eCarUp location was renamed from "Garage Engeler AG / Volvo / 180kW Super-Charger" to "Garage Engeler AG / Volvo / 300 kW Super-Charger" on July 8, 2022. It's surprising that the IDs stayed the same, because eCarUp IDs are generally not re-used if the hardware changes. But maybe they copied the config of the old charger to the new one and re-used the OCPP URL and credentials, or perhaps they moved the physical computer or connectivity module from one unit to the other.
There's a 7.5 hours downtime indicated in the live data starting at 10h20 on that day, and then it seemed immediately operational again. So they must really have swapped the 2 units in a single operation.
The charger was visible on opendata (and presumably eCarUp) starting on April 13, 2022. I don't know whether it was open to the public prior to that date or not. On Kostad pictures we see QR codes and what looks like the eCarUp logo. Maybe it was already on eCarUp and not publicly listed, or the picture has been taken later. The picture has metadata indicating it was created (taken or published, I'm not certain) on October 25, 2021, so this pre-dates the visibility on opendata.