The Nikon Z8 Battery Grip Is Also a Dual Battery Charger
Nikon MB-D10 Multi Function Battery Pack for D700, D300, D300s at KEH Camera
PBNMBD18 Bracket plate for Nikon D850 with MB-D18 Grip Arca Swiss type – ProMediaGear
Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics
Vello BG-N10 Battery Grip for Nikon D600 & D610 BG-N10 B&H Photo