I mounted a DVD, suddenly the battery widget was placed in the upper left corner of my desktop. See https://www.dropbox.com/s/cba6hineaznysoz/kde_akku%C3%BCberwachung.png Reproducible: Couldn't Reproduce
Happened on Kubuntu 14.04, KDE 4.13.1
Probably this is duplicate for bug #321717 This bug still exists in KDE 4.13.2 under Kubuntu 14.04 amd64 (Exactly same as on attached screenshots, but i have such even with Oxygen theme). The system detects battery without any problems and battery indicator works fine in KDE when I boot from Kubuntu 14.04 installation DVD. The battery indicator works fine after I install Kubuntu 14.04 to hard disk, but stop work after I installed nvidia-311 or nvidia-311-updates drivers and switched to using them. The problem disappears when I remove these drives and switch back to noveau driver. I have Dell Inspiron 7737 notebook. I hope this info helps to fix the bug.
*** This bug has been marked as a duplicate of bug 321717 ***