Nixxell NX-NBGD7100 Premium Replacement Battery Grip for Nikon D7100 DSLR Camera (Nikon MB-D15 Replacement) Vertical Shutter Release with lock. Compatible with the Nikon D7100 DSLR camera (A perfect Nikon MB-D15 Replacement ) Extends your shooting time with 1 extra EN-EL15 Li-ion battery or with 6 AA common batteries ( AA battery plate provided ) Includes : Nixxell NX-NBGD7100 Battery Grip ( batteries not included ) 1 year Manufacturers warranty.