Nixxell NX-NBGD5100 Premium Replacement Battery Grip for Nikon D5100 DSLR Camera Vertical Shutter Release with lock. Compatible with the Nikon D5100 DSLR Cameras Extends your shooting time with 2 EN-EL14 Li-ion batteries Includes : Nixxell NX-NBGD5100 Battery Grip ( batteries not included ) 1 year Manufacturers warranty.