At a Microsoft forum, users are complaining that the newest Windows operating system takes battery life at a faster rate than previous Windows operating systems.
“Unbelievable! It is Feb 2010, so this issue is already 8 months old and no fix from MS?” wrote RVBoston who is a forum member.
Another member said, “It was working fine then all of a sudden, around the 1st or 2nd week of October 09, it wouldn’t hold a long charge and I got the error.”
Source: Information Week