Nikon EN-EL18 / ENEL18. Nikon EN-EL18a / ENEL18a. Nikon MB-D12 battery grip / MBD12. Nikon EN-EL18b / ENEL18b. Nikon MB-D18 battery grip / MBD18. Nikon EN-EL18c / ENEL18c. Nikon EN-EL18d / ENEL18d. Nikon D850 (with adapter and grip).