Comment by FabHK
How is 36 hours different from 3600 hours, in your scenario? Either way, you need either need two watches, or not wear it sometimes.
The answer is, of course, that sometimes you don't wear it, but charge it. Like a few minutes in the morning and/or a few minutes in the evening while you shower or eat or whatever. Done.
The difference is that you don't need to do it every day. On the one hand, it's pretty easy to "multitask", like charging while while brushing/flossing, shaving, etc. But it's certainly much easier to not have to think about charging it at all in the evening basically ever, which is the joy that Garmin users have.
I currently have an Epix Pro and I use it to track a 45-90min workout about 6 days a week. I also have it set to "most accurate" (GPS + Galileo + GNSS) positioning and to sample blood oxygen all day rather than just at night, so it's getting quite a battery workout for a non-ultra-endurance-athlete user. When I opened this thread I decided it was a good time to charge it, since I'm in a work call anyway, and it was only at 53% after about a week since the last charge. I'll have it plugged in for 20-3min and it'll probably be around 90% when I put it back on after the meeting, and I'll find some other convenient time next week... but not until next week.