I just noticed yesterday that the battery isn't charging. I checked the fuse on the adapter and that is fine. The unit will work when it is plugged into the cigarette lighter in the car, but only then. I tried charging via the computer(which the manual says can be done) and also tried in with another adapter (in my son's car) and it wtill wouldn't charge. I'm assuming it's the battery since it does work when plugged in. I've had the unit since Christmas. Thanks for your help.
This is likely a short connection between the battery. Being jostled around sometimes loosens the battery and that is something which can be easily fixed. Pull the battery out, make sure there is some "spring" in the contacts on the unit and re-plug it in. If that doesnt solve it, then there is a minor repair/solder needed to be done. call the company and tell them that you need to reconnect battery circuitry and you should get a reasonable response