My Series 10 has survived full usage and sleep tracking without a charge for about 48 hours. Apple has done wonders with the battery!
Absolutely! Three days pleasantly surprised me!!
What am I doing wrong? I get about 24.
Luca said:
What am I doing wrong? I get about 24.
You are probably a lot more active. Sensors are enabled more when you’re moving.
Luca said:
What am I doing wrong? I get about 24.
Maybe too many notifications?
Efficient display and SoC. 
S9 is the same; I got 64 hours once.
adilarmayz said:
S9 is the same; I got 64 hours once.
Mine isn’t at all; it barely survives 24 hours. Do you have AOD?
adilarmayz said:
S9 is the same; I got 64 hours once.
Mine isn’t at all; it barely survives 24 hours. Do you have AOD?
This was with low power mode on, as shown in the post, which turns that feature off. Without it, I would say around 30 hours still.
adilarmayz said:
S9 is the same; I got 64 hours once.
Is it? News to me; I get a warning that I need to charge my S9 every day.
I absolutely agree! I would get the same amount of battery if I turned off AOD, but I like it on, so I’m stuck at around one and a half days (with sleep tracking). This watch is amazing (I have the 42 mm version, so it’s also really good).
@Presley
Always on Display. In case anyone else was going to have to Google that. 
Dude, I get 18. What am I doing wrong?
Morgan said:
Dude, I get 18. What am I doing wrong?
Do you have always on display on?
Yes! So much better than my old Series 3.
I turned off the ‘Hey Siri’ detection and left the always-on display on; I usually get two days. I hold down the crown if I want to use Siri, and this way if I say ‘Hey Siri,’ I know it will go to my phone, which I prefer.
My AW9 gets about 22 hours with 1 hour of fitness recording.
46mm?
How is it on the S9?
Roux said:
How is it on the S9?
I get about 36-48 hours on my year-old S9.