This adapter allows you to adapt a Sony L Series battery plate (such as the one built into the various Z CAM cameras) to a V-mount battery plate.
This allows you to use the much greater battery life of a V-mount battery to power your camera setup, keeping battery swaps to a minimum.
This is also the perfect solution to power smaller accessories that traditionally use lower capacity L Series batteries such as smaller LED Light Panels or external monitors for focus stations.
The Type I version is designed to be longer in order to better accommodate HDMI cables on Z CAM camera bodies.