This Sony L-Series type battery adapter plate allows you to power your Blackmagic Pocket 4k Camera through a Canon LP-E6 dummy battery. By Inserting a Sony L type battery into the locking plate, the attached Canon LP-E6 dummy battery that’s connected, can power-up the Blackmagic Pocket 4k Camera for an extended period of time. For easy mounting, a 1/4-20 cold shoe is included with this unit. It provides an output of 7.4V. The Sony L-Series battery adapter plate is designed to last through all aspects of production. The cable is 10″ in length. Made in the USA.