6AM to 10PM is the definition of all day.
Not to me. My end of day on a Friday is 2-3 am (Saturday Morning). So, I would need at last at least until midnight (18 hours). So, if we are talking really hitting the 18 hour mark after years of use, they would need to get it closer to 24 hours for me to say they hit my ideal battery life target.
Right now, my practice is to go home on a Friday after work, and switch to my mechanical watch so I actually have a working watch until I go to bed.
I’m also getting the same numbers as yours 7AM to 10PM with 10% left. Although would be much less when workout is involved. Learned to keep two chargers one at work and one at home, charge it an hour before leaving work and it’ll last until 12mn with workout and music through AirPods.
I also have a charger at work, but don't want to take my watch off as I'll miss notifications (I hate being disconnected). Your solution is a good one, I just wish my watch would last 24 hours before needing a charge. I don't mind charging every night.
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I realize that I'm pretty fortunate when it comes to how well my battery has held up, because I've certainly seen posts (including yours) about watches doing far worse. Personally I don't need the battery to last me more than 18 hours or so, but if I still backpacked as much as I did when I was younger the battery life would be more of an issue. Then again most of the time I'd rather have faster performance than longer battery life. Ideally Apple would offer a power setting in between normal and Low Power mode, so the user could choose to sacrifice some performance for increased battery life. Maybe it wouldn't make enough of a difference in the battery though.
I certainly wouldn't want a slower watch to gain battery life. I just think Apple would be able to satisfy more customers (not saying they need to, just that they would), if the battery lasted 24 hours. I would accept less than 24 hours on exercise days. I think it wont matter as they have set their standard to 18 hours, and I just assume that will be their ongoing target for watches.