Amazon.com : Battery Grip Kit for Nikon D600 D610 Digital SLR Camera Includes Qty 2 Replacement EN-EL15 Batteries + Vertical Battery Grip : Digital Camera Accessory Kits : Electronics
BM Premium 2 EN-EL15B Batteries for Nikon Z6, Z7, 1 V1, D500, D600, D6 – Big Mike's Electronics