Hi all. So my battery on my 2009 MacBook shows it’s charged 100% however if the MagSafe falls out the computer shutsdown the piece on the bottom to lock the battery in seems to be broken so the battery just falls out or hangs in. I’m just curious if it could be the PMu not running off of it or if the battery isn’t being held in enough to work or what not. Any suggestions is appreciated . Thanks!