I got the DVX100a about a week ago, and it works perfectly, but the battery life indicator on the camera only goes down to half, and then it turns off because of low battery. I tested it and the battery lasts what it should (90 minutes) but the indicator on the camera only goes down to Half. Is this a camera problem or a battery problem? because if its only the battery I can live with it (I really dont want to hastle with returns).