Amazon.com: Synergy Digital Camera Battery, Compatible with Nikon D7100 Digital Camera, (Li-ion, 7V, 1600mAh) Ultra High Capacity, Replacement for Nikon EN-EL15 Battery : Electronics
Nikon EN EL15 Battery
Battery And Charger Kit for Nikon D7100, D7200 Digital SLR Camera Includes Vertical Battery Grip + Qty 4 Replacement EN- - Walmart.com