Hiked up a mountain today it took 3 hrs. I had outdoor walk tracking on. When I got back to the car my watch said I had 100% battery life still. 20mins later it was in power save mode and 1 hour later completely dead. 6.2.8 has totally bricked my battery. It used to last a day and a half now it only lasts 5 hrs if I’m lucky. Ffs Apple could you not put out an unbroken update for once in your lives!!!!