I have had 3, 9 volt batteries, have there bottoms pop off. It sounds like a cap gun or a firer cracker going off. This last one popped off while it was sitting on my desk, the bottom square piece of metal hit me in the chest. What I want to know is should I get rid of all my 9 volt Duracell batteries for safety reasons. And what is the company going to do to make this right, some or even my self could lose a eye, I don't even know wear the other piece went too. P.S they are not around any heat source when this happened. Like I said it was sitting on my desk, it happen right in front of me.