[DonaldPShimoda]

Huh. I've got a Series 2 that still lasts nearly 2 days on a single charge.

I know sometimes something in the software update can glitch and cause aggressive battery consumption. I wonder if you were affected by something like that (which is something they should address to prevent from happening in the future).

[reillyse]

Nope. Apple itself says the watch will last 18 hours so if you've got one that lasts for 2 days, thats great.

https://www.apple.com/watch/battery/#:~:text=Apple%20Watch%2....

[DonaldPShimoda]

That's assuming a 60-minute workout, using apps throughout the day, and the GPS model (which is slightly more energy-consuming anyway). The workout is really what'll get you; those switch the heartrate and other bio-monitoring from passive to active, which greatly increases battery drain.

If you use your Watch more passively, all-day performance is not out of the question. It all depends on your individual use case.

Besides, 18 hours should be sufficient since you ought to be getting more than 6 hours of sleep a night anyway. Somewhere in that offtime is when you can charge. I do it overnight, but plenty of people charge during their morning routine (shower, etc.) and say it charges more than enough to last all day.