Unfortunately I had to notice when opening the package that the battery is defective, or a cable (see photo) is not soldered and thus depends freely. So the battery is used in this state. The solder is unfortunately inside the battery and unfortunately is not being able to open itself to solder it.
I also had to realize that does not fit the connector on the controller and there also needs to be tinkered.
Have the Toka-Shipping (seller) and written as I was unfortunately only fobbed off.