Vello BG-N7 Battery Grip for Nikon D810, D810A, D800 & D800E

The BG-N7 Battery Grip from Vello is designed specifically for the Nikon D810, D810A, D800, and D800E DSLR cameras and accepts one Nikon EN-EL15 battery. With one battery in the grip and one in the camera, your shooting time is effectively doubled. The BG-N7 can also hold and utilize eight AA batteries. Two battery trays, one for the EN-EL15 and one for the eight AAs, are included.