I just read how to calibrate your battery, and I found out that I've been calibrating my new MBP 13" battery pretty much every day (unintended). I've been using it quite heavily since I got it last week... charging it fully, and reconnecting it to the charger whenever the battery hits somewhere around 10%.. Is this good or bad ? Should I charge it whenever it hits 50% instead ? Apple says we are supposed to calibrate it once a month. Is it bad if you do it more often ? Any thoughts on this ?