Amazon.com: Synergy Digital Camera Battery, Works with Nikon D4 DSLR Digital Camera, (li-ion, 10.8V, 2800 mAh) Ultra Hi-Capacity, Compatible with Nikon EN-EL18 Battery : Electronics
Amazon.com: BM Premium 2 Pack of EN-EL18c Batteries for Nikon D4, D4S, D5, D6 Digital SLR Cameras and Compatible with Nikon MB-D12, MB-D17, MB-D18 Battery Grips : Electronics
Amazon.com: Kastar 3-Pack Battery Replacement for Nikon EN-EL18 EN-EL18a EN-EL18b EN-EL18c EN-EL18d Battery, MH-26 MH-26a MH-26b Charger, Nikon D4 D4S D5 D6 D6S Camera, Nikon Z 9 Mirrorless Digital Camera : Electronics
Amazon.com: Wasabi Power Battery (2-Pack) for Nikon EN-EL18, EN-EL18a, EN-EL18b, EN-EL18c and Nikon D4, D4S, D5, D6, D850 (with adapters/Grips) : Electronics
Amazon.com: BM Premium 2 Pack of EN-EL18c Batteries for Nikon D4, D4S, D5, D6 Digital SLR Cameras and Compatible with Nikon MB-D12, MB-D17, MB-D18 Battery Grips : Electronics
Amazon.com : BM Premium EN-EL18c Battery for Nikon D4, D4S, D5, D6 Digital SLR Cameras and Compatible with Nikon MB-D12, MB-D17, MB-D18 Battery Grips : Digital Camera Battery Grips : Electronics