Hi everyone, I have a Penryn MBP from early '08. Last week, when I glanced on iStat in the dashboard, my battery health was about 85% after 35 cycles. Yesterday I decided to calibrate my battery after not having done it for 3 months. I basically followed the instructions that are posted on Apple's support page and a guide here on macrumors. After recharging the battery after letting it die off, to my surprise the health is now reporting to be 60% health after 36 cycles on both istat and coconut battery. Could this be a fluke and I should power cycle it again? Or should I really take this to the Apple store for a replacement? I'm still under warranty and have Apple Care.