Neewer&reg; Vertical Battery Grip Replacement for MB-D15 Works with EN-EL15 Battery or 6-Piece AA Batteries for Nikon D7100 Digital SLR Camera + 2-Piece EN-EL15 Replacement Battery 1900mAh Kit includes: (1)Battery Grip for Nikon D7100 + (2)EN-EL15 Replacement Batteries Specially designed for Nikon D7100 D7200 DSLR camera With all the functions as the same as the original MB-D15 battery grip Can hold 1 pack EN-EL15 battery or 6pcs AA battery.(EN-EL15 battey and AA battery are Not Included) 7.0V 1900mAh rechargeable battery, replacement for Nikon EN-EL15 battery