There used to be Migros m-way charging stations here, but I am unsure if they are still there.
New stations by EWB through MOVE have been added at some point. This fact is mentioned on their website https://www.gurtenpark.ch/en/about-us/getting-here
Expansion of e-charging stations in the car park
Together with Energie Wasser Bern, Gurtenbahn AG has expanded the range of e-charging stations in the car parking. There are now five charging points on the first parking level on the right-hand side directly after the parking lot entrance.
The charging stations have a power of 11 kW, which corresponds to a range gain of about 50 km / hour depending on the vehicle and the battery charge level. The charging points are connected to the MOVE access and billing system and can be activated via RFID card or smartphone app. MOVE customers pay CHF 0.35 or CHF 0.45 per kWh, depending on the price plan. Customers of other providers are charged according to the conditions of the respective provider. In addition, the charging points can be activated via QR code scan with a smartphone and credit card payment - even for users who do not have an access contract with a charging network provider. The charging stations are equipped with a Type 2 socket; users must bring their own charging cable.
Unfortunately the message doesn't say if the existing free stations are still there or not. This message was added to the website some time between January and May 2022 based on the Wayback Machine.
On Chargemap and GoingElectric it says there are 5 stations, but all the pictures on both websites only ever show the m-way chargers. I can't find a single picture of the EWB chargers. I guess I'll have to visit to find out...