The idle drain on this phone, and by idle drain I mean the amount of battery loss that occurs while I'm not using it because I'm sleeping or my phone is literally down, and facing down so that the active display is not constantly running, is definitely not nearly as good as my Droid Maxx. That doesn't mean I don't have multiple things syncing with a fair amount of activity. To be clear, my email is set to auto push- gmail, yahoo, exchange - my WhatsApp is on and I had a lot of messages, my Line App was running and I had numerous messages, my bleacher Report app had numerous stories pushed through, in addition to a few yahoo news feeds, etc.
All I can say is that my phone was unplugged while this activity transpired for approximately 6.5 hours and I woke up with my battery down to 90%. On my Maxx, it would have been closer to 96%-97%.
This was all on Wifi by the way.
On a semi separate topic, I will question though whether this is due to actual battery loss or whether the amount of battery loss is being interpreted more accurately. I question this because I've noticed now in my first 3 days with the phone, that once I hit 50%, and then 40%-30%-20%... so on, it seems to be more consistent than the Maxx. In other words, on my Maxx, once it hit 50%, I always questioned whether that figure was accurately interpreted because it always seemed to drain significantly faster than the first 50%. And at 20% on my Maxx, I would notice a precipitous decline, whereas as on this phone, it seems to continue climbing down at a consistent pace.
This is just what I've noticed over the last few days, but it still seems to translate to inferior idle drain.
PS - PayPal was responsible for 18% battery loss and was apparently awake for 28 minutes, so maybe that's partially the culprit. I deleted it now and will test again tomorrow to see if the idle drain has changed at all.