Not only cheap and cheap ..

Have the product unpacked and immediately noticed that the housing slightly loose "rumklödert" .. With only one controller all is well .. However, if the second comes into play ..
1. Instead of the LED will light up red when the last inserted controller purple does not matter whether the top or bottom and which controller is always the same result .. (normally Ready = blue; red = state of charge)
2. invites the inserted as the second controller not .. only after repeated and out put, power supply from the power company and so very fiddly.

Had this not I would Makken 4.5 star awarded on the basis of price / performance verhältnises ..

Conclusion ..: One might think: Ok what do you expect for the price.

But works should already. It's just made everything cheap plastic and Quallität control is probably not at all .. So instead of a matter of luck whether you caught a functioning unit .. Pay a few more days to test and probably send back the charging station ..