I don't recall the brand name on the box. But it is a MB-D12 look-a-like. It came with two EN-EL15-type batteries and both battery trays. So far, it fits the camera body well, stays tight, and works fine. At $100 it was a good deal. I was a bit apprehensive because I got an MB-D10 copy for my D700 a couple of years ago. The AA battery tray on that copy would not make connection. The other tray worked ok. I eventually bought a real MB-D10 because my main goal was to use AA Eneloops to power the D700 at events.
Getting an off-brand battery grip can be a gamble but it might be worth it for a fourth the price of the real Nikon model.