The BL-5 Battery Chamber Cover for MB-D12 Battery Pack from Nikon is a battery chamber cover that's used with the MB-D12 Battery Pack and EN-EL18 rechargeable lithium ion battery, when powering the D810, D800/D800E DSLR. Battery not included.
For MB-D12 battery pack.
Attention California Residents: Cancer and Reproductive Harm - www.P65Warnings.ca.gov