My motor home house battery has no inverter, so I bought a clip-on cigarette lighter socket from BESTEK, available on Amazon, and plugged this fan into it.  Wow!  It works great!  Lightweight and powerful. I have the fan hanging from a tension shower curtain rod that is near the ceiling of the motorhome.  Hubby made a hook from a bent coat hanger.  The little legs on the fan are a joke and designed to break, so hanging the fan up really works well.