On this Vaio Pro 13 (Integrated Intel graphics), once the battery reaches 5% and the applet begins its throbbing animation, the CPU usage is between 15% and 25%. Seems counterproductive to use more CPU when almost out of juice.
this is true for animated connecting network interface applet too, not powerdevil dependent
It's a symptom of a problem, it's not the actual problem. *** This bug has been marked as a duplicate of bug 378010 ***