Not all mid 2015 MBPs are affected. I think it is only some 15". I own a 13" and 15" and neither are affected. You can verify that the battery is good on Apple'

Not all mid 2015 MBPs are affected. I think it is only some 15". I own a 13" and 15" and neither are affected. You can verify that the battery is good on Apple's website, by checking out your MBP's serial.