I have been dealing with this problem recently, I used to enable vaio battery care funtionality in order to preventing over charge of my battery but recenty the battry not fully charge and it stuck at 63% or 75%. I enable and disable the battrey care but nothing happen. good to mention that the health status show excellent.
I would be appreciate if you help me to fix this problem .
Open vaio control center, select power and battery tab, turn off battery care function. turn off your computer and disconnect power cord. open computer on the battery and keep on until the shown low battery warning. connect ac adapter and wait for %100. if you want use battery care function later, discharge battery lower than %50 and switch on battery care.
Long time usages causes battery performance issues therefor must be fully charge your battery once in a month.