This "feature" is a source of mass confusion. There is a program (black box to the user) which determines charge behavior. There are perhaps four behaviors in response to whatever programming has been implemented in OS 26. 1) Quick charge to full (with closed ring at full charge). 2) Slow charge to full (with closed ring at full charge). 3) Slow charge to 80% with complete charge to 100% delayed (with closed ring at full charge). I have never observed this behavior, but is likely what kissfan and Big McGuire are experiencing. 4) Charge to an optimized limit (80%) and then remain at this percentage until next usage (with OPEN ring at optimized limit).
It is behavior #4 above which presents the user with the ability to select "charge to full" (this is displayed currently on my Ultra 3 by touching the OPEN charge ring. I have never had this option presented UNLESS the watch was charging to an "Optimized Limit" with an OPEN ring.
Very well written summary. Thank you for taking the time to reply. I see what you're saying. I think we are stuck in a #3-4 like you stated.
My Apple Watch Ultra 1 and Ultra 2 - I could click the charge symbol at the top when I put my watch on the charger and I'd get a screen clearly showing a charging circle with a horizontal line at 80% - and an option to "Charge to Full" - but with iOS 26 this has disappeared.
iOS 26: I can't click the charging symbol at the top anymore. And when I go into battery it no longer shows it stopping at 80%.
I throw my watch on the charger and let it charge to 80% where it stops:
Clicking on the charge symbol at the top does nothing (where it used to in iOS 18).
Clicking battery gives me this:
Note, no option to charge to full, no indicator of 80% line.
In the Settings --> Battery:
It shows Optimized Limit in the text.
And Optimized Charge Limit is set.
But I no longer have the ability to Charge Now anymore.