I just received this morning générique..pour grip Nikon D7100 It is normally recognized by the 7100 system ... instead of MB-D15..j'y have put six LR6 NiMH batteries loaded block in the drawer (supplied) booked batteries and everything .... bathes. I burst a peu..il holds well without any play with the bottom of the case ... the buttons and dials echo those of the case and handle fairly satisfactory way for now I assigned (in the corresponding menu) preference of use compared to the original battery D7100, so that I will know what really gives the terrain..il take some time and few outlets for that .. In summary I doubled the energy capacity for a small fee, only time will tell if this is a good move .. PS 30-05-2015 The grip is now part of my photo output ... nothing to say, it is efficient and reliable super .... all D7100 + grip + 12-28 Tokina now weighs 1.7 Kg .. Product recommend