A few days ago I noticed that the trackpad on my older (mid-2010 model) MacBook Pro was a little “raised.” Not making a big deal of it I started using it, but after using it for half an hour I noticed it actually started rising. At that point I knew that something was not right. So I quickly unplugged it, turned it off and opened the bottom plate to see what may be going on. I was really surprised to see that the battery had bloated and was almost twice the size that it should have been.