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 2 Pack EN-EL15C High Capacity Batteries for Nikon Z5, Z6, Z6 II, Z7, Z7II, D610, D750, D780, D800, D810, D850, D7100, D7200, D7500 Cameras - Walmart.com
Replacement camera Battery EN-EL15 for Nikon D7100 D7000 D610 D600 D800 D800E V1 | MeiKe Store
Best Nikon EN-EL15 battery For Nikon D - KENTFAITH