Sorry to start another thread about battery questions, but this is another question I have. I just drained by battery today and it's on the charger right now at 90% charging after 5 hours. Problem is I am going to sleep soon, should I wait til it charges til 100% and disconnect or leave it in and charge throughout the night even though it's going to stay at 100% for the next 9 hours? I guess the gneral question is: is it bad to leave the phone on plug even if it's at 100% for a long time?