Hi, I got a Macbook Pro about 6 months ago. Its my first Mac and I've had no problems until now. My battery health is 86% and the number is cycles is 40 as of today but yesterday the health was 97%. I have no idea what is wrong and why there was such a drastic change overnight. I did leave the computer on overnight yesterday by accident and the battery ran all the way down, but I don't think that should have done anything to the battery. Also, even when the battery in 100% charged, the LED on the charger stays orange instead of going green and the battery menu in the menu bar is frozen on "calculating... until full" Should I look as getting the battery replaced at an Apple Store? Thanks in advance for any advice. EDIT: The LED issue seems to have sorted itself out. Battery health has also jumped back to 92% according to iStat Pro and 94% according to Coconut Battery. I'm not sure which is correct but 92% seems kind of low for a relatively new computer which is plugged in most of the time.