Amazon.com: Green Extreme Multi Power Battery Grip (MB-D15 Replacement) for Nikon D7100 & D7200 DSLR Camera, Holds EN-EL15 Battery or 8 AA Batteries : Electronics
OLBAC | Pixel battery grip D15 for Nikon D7100/D7200
Vello BG-N11 Battery Grip for Nikon D7100 + AA and EN-EL15 Adapters | eBay