Yes, you can charge the animal camera with an external power supply. For the DC connection you need a 6V/1.5A adapter with 3.5mm (outside) and 1.3mm (inside) plug. 

No, this filter is specifically for the INSTA 360 GO 3S. Of course, our store also has filters for the INSTA 360 GO 3, and you can go in and buy them directly. 

So when it powers off, it goes into a sleep mode. That sleep mode doesn't require alot of power, but if you have it set to turn on if the camera detects vibrations, it uses the cars battery. Mine is plugged in all the time and it only powers on when I turn the car on or it feels vibrations. With the vibration setting, it will turn on when I open my car door. But if your power source isn't powered when the car shuts off, then it doesn't use any power, just what the camera has stored up. Hope that helps 

This uber dash cam can use high quality U3 above 32~128GB Micro SD card. please kindly format the SD card when first use. 

The dual dash cam can record video with the screen turned off while you use the screensaver feature, it won't distract the driver and protect privacy. If you want the dash cam records video with screen turn on, just turn off the screensaver feature.