Neewer Vertical Battery Grip Replacement for MB-D15 Works with EN-EL15 Battery or 6PCS AA Batteries for Nikon D7100 Digital SLR Camera Specially designed for NIKON D7100 DSLR camera. With all the functions as the same as the original MB-D15 battery grip. Can hold 1 * EN-EL15 Battery or 6pcs AA battery.(Not Included.) Engineering plastic body and passed the drop test . Backed with Neewer 12-Month 100% Satisfaction Guarantee.