[wteviper]

I have never had that problem. I drove from Vegas to Santa Ana, CA with the charger and headphone jack plugged it using GPS the whole way - My battery stayed charged the whole time.

I have noticed that some USB connectors kind of SUCK, and some audio cables will press on the usb cable connector, make sure the orange light turns on when you connect the usb cable (to indicate charging) then connect the audio cable and see if it turns off, if so wiggle the connectors to see if it comes back on.