When do you guys charge your computer back to 100% and then unplug and charge again? or do you guys charge it at 100% and leave it like that? what % is the best to charge the computer? because i usually charge mines around 70% and i have like 3-4 hours:\ and my mac is a year old? 5055 mAh current 5450 mAh and anther quick question does apple care cover your battery if it dies? or do you have to pay for it?