FOUR STUPID MISTAKES MAY KILL YOUR NETBOOK BATTERY

It does not make a difference if it is dead or certainly. It should take max 3-6 hours to charge to full power even if you still have battery left. There is a big difference in how long it will last. There is a standby mode when you aren't using it which most phones last up to several days 3 max. But if you use it a lot battery will die more quickl