Use this BL-6 Battery Chamber Cover to protect a EN-EL18 rechargeable battery when it's being used with a Nikon D4, D4S, D5, or D6. This cover can be purchased as a spare or replacement for the one that came with your camera.
Compatibility
For EN-EL18 battery when used with D4, D4S, D5, or D6 camera
UPC: 018208270514