I think I mentioned this in another thread of yours, but I suspect you are going to struggle to find a portable, weather-rated power station or AIO system with a reliable warranty. From everything I have seen on this forum and elsewhere, things that are outdoor weather-rated for constant outdoor use tend to be fixed, in-place devices designed for permanent installation- meaning devices like the EG4-18Kpv, as an example.
Even then, I would imagine they could deny your warranty for improper installation if you did something like mount it in a non-standard orientation outdoors on a handtruck that might allow water ingress into the system.
Maybe someone can prove me wrong and point me to a power station that's rated for outdoor weather exposure, but I'm not aware of any. I think you'd have better luck doing what some users here have done, and buying something like a truck toolbox and placing your system inside it to allow for water protection.
