Instead of wiping battery stat when you calibrate your battery, battery drain is caused by signal IMO, airplane mode can avoid that problem or try to make your signal available as you can.
Yeah, that´s what I´ve been posting about too. Much of the battery drain apparently goes out to radio /cell signal/, it depends heavily on quality of signal in your area. The trick with airplane mode during the nights or whenever you need helps a lot, if you go back several pages you can find that even dev himself and matmutant too were using this.
One more thing. You may want to disable radio alone, with keeping other connectivity like wifi or bluetoth enabled. Just go to phone, dial *#*#4636#*#* wait a moment and you`ll be redirected to testing page, tap Phone information, scroll down and tap Turn off radio.