So here are my battery stats after 14 hours off the charger. Is it better than my Z Force or Z2 Force? I honestly don't know. I'm one of those people that don't get concerned with battery life stats and SOT numbers. If my phone lasts all day from the time I wake up until I sleep again and I don't have to charge during the day....I am happy. I will try to leave it off the charger all night and see where it's at tomorrow morning after 24 hours. For me...this is good battery life, a moderate day of usage and still at 50% battery after 14 hours. I can live with that. What sucks is the Google Play Services. This is a brand new phone running Pie out of the box. I never believe Google's claims of better battery life in each new version. In my experience battery life is always worse with each new version of Android. Always some "Google" app or service killing the battery.
Here it is after 24 hours off the charger, no battery Mod just the phone battery. I never believe the "48 hours of battery...." claims. They are always followed by asterisks and other symbols with footnotes about being an estimate. I can live with the battery life on this thing. Tapatalk is not the most battery friendly app around and not much we can do about Google Play Services and other basic Android functions being high on the usage list. Overall, I am happy with the phone so far.
I'm constantly getting between 8 and 9 hours of screen time on single charge. That's taking phone off charger at 6am and putting it back on at 11pm-12am.
With battery mod I could probably go couple days on single charge, but I'm a very heavy user, YMMV.
The phone comes with three different Display - Color options; Natural, Boosted and Saturated. Mine was on Saturated by default. I changed it to Natural and seen to be getting even better battery life than before. I prefer the Saturated look & colors, but can life with Natural if it's going to help get much better battery life.