No pappajohn they are mainly 24volt systems some even 36v or 48v. ALL the scooters we have ever serviced have never had "sealed" throttle controls, wigwam pots, switches of any kind or the rear brake micro switch and corrode giving all sorts of faults. Even had them come in and when the main controller was removed had a cupful of water drain out - it was a poor design as fitted with leads at top which allowed the rain from the wheel splashes to fill it!! Yes they are all "under cover" but you know water will find it's own route and sometimes you wonder how on earth did that find it's way there.Mine hasn't be stolen.
As for don't use in the wet......better not use your van or car in the wet, it has a battery as well.
My scooter batteries, like all scooters, are under a plastic body panel and all the drive components are fully sealed.
Apart from that, were only talking 12v.