Visited today without charging.
This charger probably had a similar history as the other old AMAG chargers. The EVite stickers and the "now paid" sticker indicate it must have been free at some point in the past. Then it probably used the CH*AMA payment system for a while and is now networked through ChargeON.
There is no indication on who may charge here, only that the charge is paid and that parking without charging will be reported to the police and may incur a fine (note that there is a car parked illegally right in front of the sign).
The spec sticker on the charger say this is a 20kW Terra 23CJG. It was probably upgraded internally to a 50kW later, as the cable holders say 50kW and that's what I have seen in other charging apps in the past as well. I believe the same thing happened in Bern. They must have gotten some of the very first units and upgraded them as soon ABB offered the newer tech.
I'm surprised there are no newer HPCs here. I walked around the building, there's no sign of construction for a 180/360kW station like at other AMAG locations.