Windows 10: Estimate time is missing

Hi community,I had an update on windows 11 but estimate time was missing in windows update setting

:)

 

missing battery time remaining estimation

As strongly suspected and concluded in the Q and comments:

after adding:

and deleting the key or setting to 0:

the missing remaining time estimation is finally back!

edit:

semi annual windows updates are obviously reverting these changes. You have to reapply the changes after 1803 to get back you battery time estimation!

 

missing battery time remaining estimation

I am examining a new Surface Book 2 and missing the battery time remaining estimation.
On a Surface Pro 4 it behaves as expected and I try to check the differences.

If you google it, there are many opinions. Many user say it is missing since 1709 Update.

Obviously there are some (HP) Laptops that can bring back the information as an BIOS/UEFI option, so it seems to be an ACPI call?
But the Book2 as well as SP4 have no settings in this scope.

Also the connected standby feature being disabled may bring back some behaviour.

I am currently checking this reg hive:
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power

And I am wondering about the meaning of the entries.

e.g. UserBatteryDischargeEstimator which is nearly impossible to find with google and it exists only on the SP4.

Are there any Surface Book 2 out there that show that estimated time, so a UEFI issue could be ruled out?
Is it OS or Hardware related?

Any ideas or docs that may help with that issue?
3rd party apps and disabling modern/connected standby are not an option, as I want to understand the root cause why it works with the SPro4 but not with SBook2

 

Why did the startup window get cleared?

I didn't missed any step, the list was gone and gone , even after using lot of programs the programs were not listed in that list.