Nikon BL-5 is a battery chamber cover. It is used with Nikon MB-D12 Multi-Power Battery Pack together to provide extended battery power with EN-EL18 or EN-EL18a battery for the following Nikon cameras:
It is also used with Nikon MB-D18 Multi-Power Battery Pack together to provide extended battery power with EN-EL18b battery for Nikon D850 camera.
