How to test battery life?
I recommend the right method to know how long will notebook batteries be used, that's make use of the BatteryMark4.0.1 software to test your sony notebook batteries.
How to choose a notebook batteries?
You'd better choose the same type battery for exchange.In oder to make notebook computer battery have a longer power supply time,you can choose lithium battery recommended by manufacturer or following the pc vade mecum.
Disclaimer:
The products supplied by our Company are [replacement for] sold for use with certain products of computer manufacturers, and any reference to products or trademarks of such companies is purely for the purpose of identifying the computers with which our products [are replacement for] may be used. Our Company and this Web site are neither affiliated with, authorized by, licensed by, distributors for, nor related in any way to these computer manufacturers, nor are the products offered for sale through our web site manufactured by or sold with the authorization of the manufacturers of the computers with which our products [are replacement for] may be used.
Laptop Batteries 
