How to check an electric car charging station?

What charging station do you use? Or planning to buy? I think that the representative should give the opportunity to make a test sample in order to charge the electric car. By the way, you can read about Cyber ??Switching charging stations https://cyberswitching.com/level-2-ev-charger/. This is a well-known company, which, by the way, is represented in many places in San Francisco. I've seen them in several parking lots. And at work, a friend has such installations.