Vello BG-N7 Battery Grip for Nikon D800 & D800E Fits Nikon D800, D800E & D810 Camera | Comfort and Control in Vertical Position | Extends Shooting Time Holds One EN-EL15 Battery | Vertical Position Shutter Release Button | Alternate AF-ON Button and Command Dials Alternate Multi Selector | Contact Cover Holder | Works with Eight AA batteries Includes Battery Trays In The Box: EN-EL15 Battery Holder, AA Battery Holder, Limited 1-Year Manufacture Warranty