This Marshall Electronics Dual Uni Battery Mount is compatible with the Marshall Electronics V-LCD56MD and V-LCD70MD monitors. It attaches on the back of the monitor via a baseplate that's supplied with the monitor. It supports two Canon LP-E6 batteries with hot-swap functionality and uses only one battery at a time. Connection to the monitor is via an integrated cable with a JST connector. The required baseplate can also be purchased separately (model # 0032-1303A).