Thanks Tony. Which port did you use....seems like I read somewhere that the port on the radio did not charge an IPOD but the one in the console would. I have the battery pack but would like to leave the viewfinder attached so I could see what I was filming. Also I would like to use the Wi-Fi remote to control the camera (those little tiny buttons are hard to find with the camera hanging upside down on the windshield). Both are battery intensive. I checked and have a USB extension cord (the supplied one will reach the radio) that will reach the console. Maybe this afternoon I too will check to see if it charges.
I have used the USB on my stereo to charge the GoPro. I have the GoPro 3 but use the backpack LCD veiwfinder from my old GoPro 2. It works but I can't charge it for some reason when the viewfinder is attached so when I charge I have to take it off, no big deal really.
I use the iphone wifi remote app. Works great, you can turn the GoPro off and on,start and stop the recording and see what you are filming all from inside the vehicle.
If you are asking if I have charged the GoPro while filming, no,have not done that.