Find Your Two Way Radios batteries By Brand
Select Two Way Radios batteries by Brand List Bellow.(Press "Ctrl+F" and enter brand will help you find easily)
Try checking the configuration in the Vaio Care control panel. Under the Battery Care Function for Longer Life section, see if the option selected is "50 percent". If this function has not be activated the whole time, then the issue could be a faulty power cell.
If, however, that does turn out to be the "problem", you may want to consider leaving it that way. There is a reason why the battery care feature restricts charging to sub-maximal levels. All laptop cells have limited charge cycles. By reducing the maximum power levels, it allows the battery to last longer at the expense of unplugged time.
Unless you expect to be away from an outlet for extended periods, letting battery care take charge of your power levels is a good idea to extend the life of your cells.Disclaimer