Charging/not charging problem

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http://forum.xda-developers.com – For the last two days, my Nexus 4 has been charging weirdly. I leave it to charge overnight and when I wake up its at (usually) 78%. When I go to the battery stuff in the settings it switches between charging and not charging. It's back and forth. Has anyone seen this? Sent from my Nexus 4 using Tapatalk 2 (HowTos)