I’m still on Windows 10. Piggybacking on what @pjd said, when you right click on task bar, and select taskbar settings, in the Notification Area, do you have an option to ‘Turn system icons on or off’? That’s where I found the power icon for my Lenovo.
Do you have a third-party power manager like PowerChute? If so, that might mess with the taskbar display. In PowerChute at least, you have to show/hide the icon from the PowerChute settings.
If it was actually inaccurate, then it wasn’t handy. It was the illusion of handy.
So now when you want to know your battery status, just guess. That may have been all the good the old one was after allowing for all the chicanery by battery and tablet manufacturers who were lying undetected to Win10 & therefore to you.
Windows 11 didn’t (purposely) remove the battery indicator; it removed the setting that allows you to show or hide it. Presumably without the setting it is supposed to be always displayed, but something weird is happening here.
They removed the part that showed battery time remaining because it was frequently inaccurate, but it is still supposed to show the percentage.