Visited today without charging.
The chargers are in the parking lot for the Sportanlage. The sign at the entrance says only visitors may park here during opening hours, and anyone may park the remaining of the time by payment at the parking meter. The sign doesn't make any mention of the charging stations, which I assume you may use at any hour. It's not clarified either if you need to pay for parking when using the chargers.
One of the charging spots has a handicap sign. There is no vertical signage to explain who may use the charging station and whether anyone can use the handicap spot when it's the only one free.
E147606/E147607 is the charger on the left and E147608/E147609 on the right.