I recently bought a QI wireless charger and my nexus 4 battery life dropped significantly. It won't even last a day without any activity at all. Then I found this bug thread:
Google Groups
Using wireless charging, prevents the Nexus 4 from entering deep sleep state. This causes continuous battery drain. Several people are experiencing this issue. I had to stop using wireless charging. The bug was reported more than a month ago. Google is still looking into the issue without any fix or work-around. The bug is present in Android 4.2 as well as 4.3.
Google Groups
Using wireless charging, prevents the Nexus 4 from entering deep sleep state. This causes continuous battery drain. Several people are experiencing this issue. I had to stop using wireless charging. The bug was reported more than a month ago. Google is still looking into the issue without any fix or work-around. The bug is present in Android 4.2 as well as 4.3.