I had the same crash. Here is the crash report. I have edgy installed here.
** Attachment added: "Crash report" http://librarian.launchpad.net/4964698/_usr_lib_xfce4-battery-plugin_xfce4_panel-plugins_xfce4-battery-plugin.1000.crash -- Crashes when attempting to add applet to the panel https://launchpad.net/bugs/60201 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
