Uni-Volt is what Airstream calls the power supplies they use-no matter who makes them or how they work. They don't need to have the word univolt on them. The main difference now is construction- the old technology ones have a big transformer and some capacitors and are therefore heavy. Newer ones use switching power supplies like a computer and are much lighter and have more sophisticated charging routines which are better for the batteries.
"Not all who are laundering are washed" say Bill & Heidi
'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737