Questions about Charging System

No, actually they don't exist. However, buying 2 batteries for the price is not too expensive.
In addition, the contact pins of the stands wear out over time and then it can happen that the batteries are no longer charged. This is easily recognised by the fact that the LED no longer lights up red continuously, but flashes red quickly when the controller is in the socket. Then you have to take the

I'm currently charging my Xbox Elite controller on it so can confirm it is.