My own bloated MacBook Pro battery

Found the 17″ MacBook Pro slightly tilted on the table today…picking it up revealed the worrying sight of a very bloated battery. This happens when there is a breakdown in the chemistry which causes gases to be generated and built up inside one or more cells, usually due to a short-circuit or charge at higher voltages than rated. The problem is not just the bloating, but that this can end up in the battery venting, catching fire, or even exploding. Don’t believe me? Check out this video: