In the first few days the battery time was very good for me. But after all the geeky setup the battery drained dramaticly.
After some research I found out that the Exchange Mail setup drained it all up... Fix for me was the last post on this thread:
http://forums.androidcentral.com/t-...ttery-drain-issue-exchange-services-data.html
And after that fix I had new problem with Android Services drained the battery alot and found this tip helpful: https://productforums.google.com/d/msg/nexus/kKJqGw-PFHc/jvFqtcQGNK8J :::
"""Something i tried yesterday and seems like battery is back to normal.
I switched to developer mode and activated the ART. It basically optimizes your apps as you know. Next played around with different apps. Then reverted it back to default run time. After this the battery behavior is back to normal. I mean now it is lasting for more than 24 hours with one charge.
I am not sure how technically it benefited by switching to ART and back to original. But it is working fine now.
Can anyone try this and check if the battery consumption betters. """
After that everything back to normal for me. Sorry for all the cut/paste stuff. New here and on forums

Images below show`s (I hope) before and after the fixes.
Norwegian language but think the symbols should be enough to understand..
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