Updated version of Vertax D16 For Nikon D750 Multi Battery Grip as MB-D16 shape vertical grip with shutter-release, main dial, exposure lock button. Compatible: Nikon D750 (only) Battery Type: 1 f EN-EL15 battery,6pcs AA/LR 6 Alkaline Battery Replace the contact cover on the camera and the contact cap on the Vertax D16 when the battery pack is not in used to keep the capacity of the battery. Please set the camera menu to ensure the camera shows the correct battery level when AA batteries are used. Correct option should be selected, or the camera may fail to function as espected.