Share your experience!
Check this thread at first:
http://talk.sonymobile.com/t5/FAQ/Facing-problems-with-abnormal-battery-and-shutdown/m-p/320375#U320...
Thank you very much for you help. I checked it, also repaired my phone via PC Companion. But no luck 
I am having this problem after updating to 14.5.A.0.270
Could you please post a screenshot of your battery graph so we can see which apps that use most battery?
Thank you for replay. Here you can check.
That graph looks a bit steep indeed. Did you reset the phone after you repaired the software? If not, you can give it a try. The other thing you can do is to send in the phone to a service center. See my signature for contact information to your local Xperia support.
Thank you. I did it. Is there any problem in 14.5.A.0.270 version?