Ha, this will probably be my last post for the day, no charger :crazy:
This is way too much of a drain and too quick though. There are many ideas/suggestions/troubleshooting techniques I can give you but before that I would like to know if you performed basic battery saving things.
1. Turn off NFC as you don't be using much
2. Sign out of Google+ if you are not using
3. No synching of contacts, calendar with google other than just emails unless you are really using. You can always sync when you need to
4. Brightness to auto or lowest whichever works for you
5. Disable GPS and location services of google
6. Use wifi wherever available especially home that way it's not toggling between 3g/4g signal where it can't find. It drains fast too
7. Uncheck all USB, bluetooth tethering under settings - More (under data usage) - Tethering & Portable hotspot
Once you have done all of this, test your battery with normal or heavy usage however you use the phone. See if you get improvement in usage. I'm on Verizon LTE network LTE is super fast in terms of downloads but does drain battery quicker than 3g and GSM version phones but still yours is very bad, it shouldn't be. We all know the keep awake bug is there which prevents the phone to go in deep sleep mode
Now the second area if you are comfortable entering into this territory
. Unlock the bootloader, Root the phone (don't worry you can always re-lock the bootloader and unroot to bring back to factory settings). You can look for setcpu to set different profiles while phone is in sleep mode, I can share mine if you care. You can still stay on stock rom, flash CWM, make backups (nandroid and titanium) and flash few custom kernels which support undervolting options. Install better battery stats, battery monitor and alogcat from market to test your battery. I'm curious to see which wake locks in your better battery stats are holding for a long along with counts and % cpu consumption. Have fun