I just recently got a macbook and apparently, my charge cycle is more than it should be. I have read all the information on the apple website about calibrating it and how to maintain a better battery life but i'm still unsure about when to charge it. I have been told its better to let it die, then charge it to 100% which I have been doing since i've had it but now i'm told I shouldn't. So when is it appropriate to charge the battery? Is it alright if I charge it at 80% and use it on AC power? Or does each charge count when the AC power is taken out and put back in because i've had cases where the plug has fallen out for a split second and i'm not sure whether or not to charge it back in.