SmallHD's FOCUS monitors have a power output for smaller cameras, and with thisFOCUS to Panasonic DMW-BLF19 Power Adapter, you can power your Panasonic GH-series mirrorless camera right off the monitor. Insert the dummy battery end into your camera and connect it up to the FOCUS monitor's output for power. Powering the camera using the montior's battery will result in a simplified power setup and longer shooting times between charges, compared to the standard internal batteries.