Connect your select Sony camera to the Electric Ray E1 USB Power Converter with the FW50 Dummy Battery Coupler from iFootage. This coupler fits inside your camera's battery compartment, replacing the standard NP-FW50-type battery pack with a longer, more constant power supply.
(+) Well made device. (+) Coil cable works well. (+) Attractive packaging. (+) Fast shipping. (-) Wrong size female connector. I cut it off and replaced it with a slightly larger one. Now it is perfectly into my Feelworld field monitor, as well as several other devices.
The device works as intended. My Sony alpha 6000 camera has a hatch to pass the wire through. The wire is so thick and stiff that it is necessary to force the battery door to shut. The coiled wire is nice and long allowing me to hang a power pack from my tripod weight hook with room to spare.