Probably easier to use an outside power source.
The HC-VXF1 requires 5V available from any USB power source. I use an AUKEY 20,000mAh power bank to run and charge my 800, this input will run the camera for about 10-12 hours without recharge.
We have a Panasonic Hc-vxf1 to use in church for streaming via facebook. All works and we feed the USB output into the PC to broadcast BUT cannot find any way of turning off the IA or other on screen Icons. Any help with this would be most appreciated.