The Vivitar MB-D18 Pro Series Multi-Power Battery Grip for Nikon D850 DSLR Camera allows the Nikon D850 to be powered by two EN-EL15 batteries (one in the camera body and one in the grip), effectively doubling your shooting capacity. The MB-D18 also provides a comfortable vertical grip with an additional shutter release and scroll wheel for easy access to the camera functions when shooting in the vertical orientation.
With the included AA battery holder, users can also power the camera with 8 AA batteries.

Key Features:
Effectively doubles shooting capacity
Holds one EN-EL15 battery (an additional battery can be used in the camera)
Holds 8 AA batteries for added convenience
Improves stability
Vertical shutter release & scroll wheel