I don't know what happened but my battery now drains in 1.5 hours with wifi off and screen dimmed. It also charges really fast (from 45% to 85% in 7 mins) which makes me think it doesnt charge to full capacity. I usually got around 5 hours last semester. Is the damn thing already worn out? I use it for every class to take notes. And the battery meter lies and says I have 5 hours left, when it drains 1% per minute. oh I've had it for 1 year also.