Guys,
Google has acknowledged there is a problem with standby battery on the Nexus 4 phone. Doesn't seem to show up in all phones but lots of users reporting the same behavior, 10%/hour battery drain on standby. There is really not much you can do about it because the root of the problem seems to be a driver bug in the kernel.
There's a whole group devoted to this on Google with someone from Google saying they are aware:
https://productforums.google.com/forum/#!msg/mobile/jO65dcM7J2Y/6yuFEWTBOscJ
This will supposedly get fixed in the next update. Sort of sad if you ask me that this is happening. Lots of us came to Nexus 4 running away from the flakiness of customization of Samsung et al. and we've landed on this bungled mess that Nexus 4 has been so far. My phone is not usable in its current state as the battery will be dead in 10 hours even without toughing the phone. Not cool Google.