Charge Remaining (mAh): 5602 Fully Charged: Yes Charging: No Full Charge Capacity (mAh): 5717 i used this for a few days.... is the charge capacity normal? what does the charge capacity mean? when i use the MBP 13", i use it with the power plugged in. currently i have 0 battery cycles. is it better to use it plugged in? will using MBP plugged in make my battery cycle last longer?