Dell :: M1530 Battery Level From 1 Hr -> 0:07 Instantly

recently I started having battery issues on my m1530. I have the 9 cell, and it always worked fine and gave me 3-4 hours of time. Now, though, it displays 3 hours, then drops slowly and accurately with time, until it gets to about 1 hr. At the 1 hr mark or so, it will instantly fall to 5% remaining (about 7 mins) and then turn off after that 7 minutes.

Also, I have been having issues with the charging as well, where it will get to "plugged in, not charging" and just sit at a certain %charge. I am away from home at a temp housing this month, so I don't know if it is just the outlets here, but sometimes it will charge all the way up and others it will just give me power and no charge.