Amazon.com: Synergy Digital Camera Battery, Works with Nikon D7100 Digital Camera, (Li-Ion, 7.0V, 2100 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL15 Battery : Electronics
BM Premium Pack Of 2 EN-EL15 Batteries for Nikon 1 V1, D600, D610, D750, D800, D810, D7000, D7100 Digital SLR Camera + More!! - Walmart.com
Camera Battery Door Cover Cap for Nikon D7100 D7200 D7500 Repair Part Accessory | eBay
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