When I plug my iPhone 3G into any charger (car, computer, wall) the charging meter will not show up and show that it is charging. When my batter goes completly dead I can plug my phone into any charger and after ten minutes it will boot back up like normal but will never show more than 20% battery life. When I leave it on charge all night it still shows 20% charge in the morning I can plug it into my car charger and place a call and I can watch the little battery meter in the top right corner slowly go to full charge. The battery will last all day like normal, but it is a little aggrevating. Any help please?!?