Amazon.com : Nikon EN-EL18 Rechargeable Li-ion Battery for D4 Digital SLR : Digital Camera Batteries : Electronics
Nikon EN-EL18 Rechargeable Li-ion Battery for Nikon D4 DSLR Camera - Photo Service
3500mah En-el18 En-el18a Batteries Or Smart Fast Dual Chargers For Nikon En El18 Enel18 D4, D4s, D5, Mb-d12, D800, D800e - Digital Batteries - AliExpress
Nikon EN-EL18C Camera battery replaces original battery (camera) EN-EL18, EN-EL18a, EN-EL18c 10.8 V 2500 mAh | Conrad.com