I had the same problem tried to remove the one and panel crashed and restarted the battery icon was gone so I thought it was removed so then I tried to put it back then I ended up with 2 and niether had an icon just a small empty space that you could click on and get the settings menu
I went to menu-preferences-default applications for lx session then autostart and unchecked power manger to disable it from starting and rebooted Then I edited /home/(user)/.config/lxpanel/Lubuntu/panels/panel and removed the 2 entries for power manger saved the changes I rebooted again and checked in panel items and they were gone Yay! :) I am sure I did extra steps as I am a noob, but hope this helps someone, maybe someone else make this more concise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1385688 Title: lxpanel crashes when trying to remove second power manager plugin To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxpanel/+bug/1385688/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs