I already got mine replaced due to a similar issue.
My MBP was randomly shutting down, then eventually it wouldn't even recognize that there was a battery installed. I took it to an Apple Store Genius Bar, and they happily replaced the battery. (Before this issue was known.)
My MBP was randomly shutting down, then eventually it wouldn't even recognize that there was a battery installed. I took it to an Apple Store Genius Bar, and they happily replaced the battery. (Before this issue was known.)