Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
It's ok. 1 hour of use, 8 hours of standby, and at 89%. Turn off as many location services as you can. Weather does not need you location, amongst many others. i even got some pop ups today about apps using location services.
 
It's early days but I am actually shocked how good it is. It's 6 PM right now and with the 5S I would be reaching for the charger. On my 6+ I am currently at 70% with the exact same usage.

Quite impressive.
 
Seems fine

66% after a days use. Around 3hrs 3min used, 52% battery usage to safari and 14 hours standby. Consistently estimated around 10 hours of usage.

I'm happy with that, 2 days use and today i've spent a lot of time in low signal areas, like 1 bar to no service.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.