Hi c.gingerich, I'm afraid that is not working on Windows 8.1 (at least on my laptop).
On most windows with titles, I can see the title is appended with the characters "- [Battery life remaining: %]
" (note that no number is shown before the % sign) before the original title-part is deleted one character at a time -at a rate of roughly one char a second. Therefore, after a few seconds, the windows' title is shown in WinLister as "- [Battery life remaining: %]
" and of course there are many such windows, now with unhelpful names.
I'd upload some screenshots, but I'm not sure how to go about that... it will keep for now! Thanks for trying, perhaps other Windows 8.1 users can also try it and verify whether it works, as my system is far from standard! If one person benefits then, (assuming it WAS a quick hack), it would have been worth while.IDEA: Battery indicator in Window Titles