Amazon.com : Neewer Vertical Battery Grip Replacement for MB-D15 Works with EN-EL15 Battery or 6 Pieces AA Batteries for Nikon D7100 D7200 Digital SLR Camera : Electronics
Amazon.com : Battery and Charger Kit for Nikon D7100, D7200 Digital SLR Camera Includes Vertical Battery Grip + Qty 2 Replacement EN-EL15 Batteries + Rapid AC/DC Charger : Electronics
Amazon.com : Ultra High Capacity 'Intelligent' Lithium-Ion Battery Compatible with Nikon D7100 : Electronics
Amazon.com : DSTE Pro MB-D15 Vertical Battery Grip + 2X EN-EL15 for Nikon D7100 D7200 SLR Digital Camera : Digital Camera Battery Grips : Electronics