Battery Issues with 920... A side note... unpinning all your apps...

So... I have been going through all kinds of tests trying to find out why I am having such a problem with my battery life on my new Lumia 920... I'm not the only one... my wife has one and is having the same problems... we are struggling to make it through an 8 hour work day with average use... something my first gen Titan and her Focus could do without issue... But in messing around my wife unpinned EVERYTHING from the start menu... I didn't realize this but if you don't have anything pinned it just defaults you to your app list... not that you would want to but you can get rid of the live tile screen if you want to! hahaha... Oh and with everything turned off on her phone and all the apps un pinned and all non preloaded apps uninstalled and all kinds of other stuff turned off her phone still discharged 2 percent in a matter of 10-15 minutes... there is definitely something wrong with this phone or with the battery in our phones... and yes... we have tried charging and discharging them a couple of times too... nothing seems to help... we will probably have to exchange them. :(