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
Nikon MB-D15 Multi-battery grip for Nikon D7100 digital SLR at Crutchfield
Nikon Mb-d15 digital camera battery grips: Amazon.co.uk: Electronics & Photo