The Juicebox "Little Dummy" NP-FW50 style power coupler connects internally to Sony NEX 3,NEX-C3, NEX 5, NEX 5K, NEX 5N, NEX 5T, NEX 7, NEX-6, NEXF3, Alpha A33, Alpha A35, Alpha A55, SLT-A37, Alpha 7, Alpha 7R, Alpha A7R, Alpha A7R II, Alpha A7S, Alpha A7S II, A3000, A5000, A5100, A6000, A6300,A6500,DSC-RX10, DSC-RX10 II, ILCE-QX1 cameras in place of the internal NP-FW50 battery. The "Little Dummy" enables compatible Sony DSLR's to be powered via external battery or AC adapter, allowing for hours of uninterrupted camera usage. The "Little Dummy" is recommended for use with the Juicebox DSLR Power external battery, which also includes the compatible AC adapter and will power any DSLR camera for several hours on a charge. The "Little Dummy" can also be connected directly to any compatible external battery or AC adapter, including 7-9 volt v-mount and gold mount battery plate DC outputs. The "Little Dummy" can be connected to both female DC connections (directly) and male DC connections (with the included female/female adapter). The NP-FW50 style "Little Dummy" is fully decoded. This means that the power coupler is recognized by Sony DSLR cameras and works natively with your camera's OS. A connected external battery's remaining charge level will display right on your camera's screen, just as would an internal NP-FW50 battery. WARNING: Do not connect your Sony DSLR to any DC output higher than 9 volts, as this will likely damage the connected camera.