TheDJI Ronin-S DC Power Cableallows you to power your camera from the Ronin-S by connecting to a dummy battery. One end of the cable plugs into the 12V accessory power port on the Ronin-S, and the other end connects to optional dummy batteries supporting 5.5mm barrel connectors. The cable steps down the 12V of the accessory port to 7.4V, 1A.