I never really let my phone get down to the point of dying. However, last Sat I left it on the car overnight. Ever since then, my phone can't seem to hold it's charge. I have the power defenders etc and have been using the phone for over a year and not had a problem with battery, but all week I can't even seem to keep the phone charge throughtout an 8 hour work day. Should I get a new battery or does anyone think its a phone issue? Anyone with this issue in the past?