Originally Posted by
realwarder Sounds like a bad battery. Return.
Boys I have one thing to share with you about battery life. I have bought my lumia 920 2 days before and after using few hours i updated my phone to latest amber update. After that i felt that my phone battery was draining 7%/ hour and sometimes more. So I searched all over the internet about this problem of battery draining and come to this conclusion.
Please do the following thing:
1)Go to Settings> mobile network > Network Selection > Just Select your network( Don’t put it on automatic)
Now I will tell you what happened when I did this. I charged my phone all night and unplugged it at 6.00AM (9 Dec 2013) still now it has 55% battery at 00.32 AM (10 Dec 2013)
18 Hours of usage including whatsapp, Wifi On(all the time), Browsing and random stuff on phone.
Please do this. I hope it will work for you too.