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
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