I'm on a fresh install of Ubuntu 15.04, and the battery indicator seems to not be present. It doesn't appear on the login/lock screen either.
I found this answer from back in 2011, however none of the answers/workarounds seem to work.
- I've tried reinstalling indicator-power
- Used gsettings to try to set the suggested setting, no luck.
- Starting gnome-settings-daemon manually had no effect.
- I don't have the Nvidia proprietary drivers enabled (Though I plan to activate them sooner or later)