Wow, surprised to see all these comments. My AWU before 10.1 was using about 25% a day. This is my first day on 10.1 and it looks like I’ll only use about 20%. I only use my watch for exercise and sleep tracking though and rarely use it for anything else during the day (but it’s always on my wrist and on).
I have the Ultra 1. I charge it for 20 to 30 minutes a night while I shower. This is almost always enough to get it to 100%. I charge it for maybe 45 minutes if I’ve had an especially active day.
I use about 5% to 10% of my battery for 7 to 8 hours of sleep with Sleep Focus on.
I exercise daily for a minimum of an hour (Exercise mode on).
I have Rise to Wake but do not use Always On.
I end my day (next shower / charge) with between 33% and 25% of my battery used. If I’m going on an overnight trip, I don’t even need to bring my charger. I don’t think I’ve ever used even 50% of my battery in 24 hours and that includes days I’ve been very active and tracked 3-5 hours of exercise.