I have the battery grip just been unpacked and very happy about the fact that I (despite it was not included in the item description with) an infrared remote commander as in the picture with it, had to be in the package. I've tried everything immediately. The connection is made without problems, the battery grip fits like a glove, as if it were original Canon. Super awesome!
The Ferbedienung works fine. Charging the batteries just yet, but seem as good as the original batteries to be.
This battery grip can only be recommended! And the offered price an absolute bargain!