How loud is Power Joe? Power Joe measures at 69db while idle and 72db at Max Load (measured from 23 feet). Related articles What is the difference in size when the handle of Power Joe is unfolded? What devices is my 24V-150WI Portable Powered Inverter compatible with? How much runtime can I get with my Power Joe? What type of wire is Power Joe wound with? Is Power Joe an inverter generator?