For the past two days in a row I'm getting these battery problems. I'm using the ibook on battery mode and the indicator says there's about 2 hours of battery left with 85% charge. However within 10 mins, the ibook goes blanks out and goes to sleep. Then when I reconnect it to the Ac adaptor, this time the battery indicator shows that its 0% charged! I've recharged the battery to full and tried it again and the same thing happens. What is happening and how to I fix it? I've only been using this battery for about one year.