I'm noticing some battery drain during the night on my nexus 5 even when my phone is in airplane mode.. I charged it to 100 then took it off the charger and turned airplane mode on. When I woke up it was at 95 percent.. I know it's not a huge chunk of battery but isn't that still bad for it being in airplane which is supposed to turn off all the radios? I could of swore when I did this last week it only dropped one percent, why the sudden jump? And Google play services was the top thing draining battery according to my phone stat settings.. Any advice would be awesome! Is my battery starting to die?