The Real rife is a 12v battery operated machine only. The charger can be plugged into anything from 100v up to 250v. The main reason its battery powered is that wants to avoid any ‘dirty’ frequencies that come out of the mains. A clean DC current is the idea and in fact Rife’s machines were battery operated, certainly in the early years for this exact reason.
Portability is a pleasant side-benefit of this.
