Just recently got the OP6 and am blown away by the battery life - yet there are no reviews I've seen, agreeing with me! My fav phones hv always been stock Android (N5, N6P...) though I've usually ended up with a Galaxy (2,3,4.6,7 & 8)
The OP6 is giving me a day & a half + 6-7hrs SOT...these figures are MUCH better than my Sammy's!
I find also, I'm not wary of using it to the max, coz when it DOES start getting low, I can just whack it on the Rapid Charger for 20-30 mins while I make a cuppa & a sarnie or something, and it's back up to 60-70%!! Awesome phone...
The ONLY thing I miss (though it's not REALLY necessary) is the ability to 'quietly' place it on my wireless charger at night without disturbing the 'other half' while she's kipping, rather than having to fumble about with the cable...(OP6T no doubt...)