Comment 11 for bug 144830

Well, this is a bug in gnome-power-manager.

The /proc battery remains registered in hal all the time, but changes status from present to not present.
it makes sense, since /proc file _is_ present anyway.
gpm detects, when it becomes not present, and changes icon accordantly.

But, the /sys battery actually disappears altogether, together with /sys file, but gpm doesn't handle this action , and thus doesn't update the battery icon.