For all those with battery problems,try this and see what happens

[_alexdon_]

My friends, i can see you have many problems with the batery life. I don't know if any of you has noticed this, but when the phone is charging and it reaches 100%, you shouldn't remove the charger. The phone is still charging even after reaching 100%,sometimes for half an hour. If you want to see when the phone is fully charged, go to Settings-About phone-Phone status. In the first field you can find if the phone is or is not fully charged. Try this and let's see what happens. I hope i can help some of you.

[Wiki]

No difference in safe mode too 😞

[_alexdon_]

Strange,could you try a software repair?

[Wiki]

I don't know how to do a software repair

[_alexdon_]

With SUS:

http://www.sonymobile.com/gb/tools/update-service/

[AKS1671982]

Thanks for all your suggestions,highly appriciative.But i have a wiered problem.I own a Xperia P with Latest 4.1.2 update,Build no-6.2.A.1.100.The problem i am facing is my battery doesnt last for even half an hour when i am on 3G network,and lasts for hardly 2 hours on 2G network. But runs better on Wi-Fi.Please help me with a possible solution and the exact reason for such heavy battery darin.I have disabled all sync functions,But still doesnt last for even half a day on data network.Right now i am using this phone like a normal GSM phone rather than a smar phone.

[Obazee]

My battery suddenly drian from 97% to 0% and turn off, unless I use charger it will not come up, expecially when I turn on my data.