Battery drain on android 4.3

[thisIsTheEvil66]

Since I updated my xperia m to 4.3 there's a lot of problems with battery. It's running down faster even with stamina on. But this night I left my phone off to charging and after almost 8 hours the battery was completly empty. I don't know what's going on. Now my phone is charging but only in airplane mode...

[Hampus]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

Charge your unit to 100% and use it normaly until you have around 5-10% left on the battery. Go to Settings > Power management > Battery usage, to see if you can find something abnormal from here.

You could also take a look in the following FAQ-topic to see if you find any tip:
http://talk.sonymobile.com/t5/FAQ/Battery-time-and-enhancement-features/m-p/347874

If there are no improvement, I suggest that you perform a software repair via PC Companion:

http://www.sonymobile.com/global-en/tools/pc-companion/

In PC Companion you press start on Support Zone > Start on Update the phone/tablet software > Repair phone/tablet (the blue clickable link in the message) > Follow these steps without having your device connected to the PC.

Follow the instruction that appears in the program and do not connect your device until this guide tells you how to connect it.

[thisIsTheEvil66]

There is nothing strange in Battery Usage. Everything's as normal as possible. Everything's turned off, phone is in airplane mode. Stamina is off cause the phone didn't charge when it was on. Now it's stuck on 10% and don't charge. I tried charging from USB and other charger. No results.

[Hampus]

In this case I suggest that you contact nearest service center so a technician can examine your unit. You can contact your local support team for further information about nearest service center and/or how to proceed with this in the best possible way:
http://www.sonymobile.com/global-en/support/contact-us/contact-info/

[samkkr]

i wud agree the battery drainage is a lil too fast but however i love the ram management its better then before and the scrolling is smooth too but the white themed background is pathetic