I have a Mid 2011 MacBook Pro - so around 2 years old. According to iStat Pro, it's been through 430 cycles with 93% battery health. As far as I can see from th

I have a Mid 2011 MacBook Pro - so around 2 years old. According to iStat Pro, it's been through 430 cycles with 93% battery health. As far as I can see from the comments, I'm one of the lucky ones.