Nikon MB-N11 battery grip for Z6II and Z7II now in stock - Nikon Rumors
Amazon.com : FocusFoto Vertical Multi Power Battery Pack Grip Holder for Nikon Z6, Z7 Full Frame Mirrorless Camera Replace for MB-N10 EN-EL15 EL15B : Electronics
The Nikon MB-N10 battery pack for the Z6/Z7 cameras will be officially released soon - Nikon Rumors
Nikon EN-EL15c Rechargeable Lithium-Ion Battery for Z7, Z6, Z5
SmallRig Camera Cage for Nikon Z6 II/Z7 II with MB-N11 3866 B&H