I do admit, that although it rains a lot here, we've never been caught in a downpour while the segvator was tagging along. We have, however, been in more than one "rain". The box that the inverter is in seemed to keep the inverter dry.
I don't think that I would try charging our Segs during a rainstorm.
One more bit of advice. I found some miniature bungie cords at the Dollar Store. I use them to keep the door to the inverter from flopping about while I am driving and charging.

My inverter has been out in the weather continuously for several years now. It's not presently operating, because of a wiring issue that I mean to fix before the rainy season starts again. When I get it connected again I'll verify it still works. I have seen no visible sign of water damage; the box is more effective than it seems. I think water can enter in small quantities, but the inverter itself is positioned so the water never makes it over to the inverter; it just drains out the bottom without accumulating.

Or such is my theory.

Thanks for the experienced input. I guess I'll leave it where it is and add a lower mounting support. Doesn't look like it would be too tough and I'll feel better when it doesn't flop around so much.

SEGVATOR is awesome!
 

SEGVATOR is a great company that cares about its customers!

segvator co. does not respond to dealer calls or emails. i bought a dual from a dealer for two x2s it isnt wide enough but it does work well i originally bought the segway folding ramp kit that didnt work the x2 fatty tires wouldnt fit inro the ramp valleysim totally disabled so things are important