I've had this phone about a week now, and the battery life is just fine IMO, and I am on my phone all day long..
Although I'll qualify that a bit, I have yet to go out on an all day field trip,away from mains power...so I guess I'll see..
But the thing is, in the morning I'll wake up, phone might be at 60% , I'll plug the charger in and by the time I'm out the door to work its fully charged. And I can get through the whole work day fine too.
Basically on my s4 I've that that phone on power save for most of the day...so far with my edge I haven't even tried low power mode yet after a week of use..the situation just hasn't come up...
Over all I love this phone, coming off a s4 I'd glad I went for the edge variant , the standard s6 just looked too similar ,looked good..but pretty much seemed like a metal version of my s4. The edge just makes me want to pick it up...I love how it looks.
Feels good in hand too..I was worried, hard to tell at shops because they had the security thing stuck on the back. But yeh,its fine.. Although, on a hot day, if yr hand was sweaty.. This thing is going to fly out of it.. The standard model def gives a better grip. No doubt.
But I love the bubble screen on the edge, gives everything a bit of depth. And the finish is incredible.. Super impressed.
Probably the most impressive bit of tech I've held in my hand since the vita..