So I've got a few questions about ways to prolong the life of may new macbook pro's battery... 1) How often should I fully charge/discharge? 2) At what % should I plug in? 3) At what % should I stop charging? 4) If my MBP is 100% charged is it bad to keep using it while plugged in? Or is it better for the life of the battery to unplug it and let it get used? 5) Any other tips/advice? Only reason I'm asking is because my 2 month old 13" MBP is already down to 90% health after only 32 charge cycles . What am I doing wrong?!