Thus far, I am for the most part satisfied with the Nexus 6's battery life. It isn't phenomenal (as I'd hoped), but it definitely gets the job done. On the day in these screenshots, I was about to go 17+ hours on a charge, with more than 4 hours of screen time, along with almost 2.5 hours of talk time. All of this while being in a low signal area (65% time without signal). I had GPS, bluetooth, and wifi all turned on. I also had ambient display (with approx. 40% brightness), always listening (OK Google), and Google Now turned on. Gmail is set to sync 4 different email accounts, with 10-20 emails coming in each hour.