Exemplary dispensers that receive power from a wireless focused power signal and methods of charging such dispensers are disclosed herein. An exemplary dispenser for dispensing soap or sanitizer includes a housing, a receptacle for retaining a supply of soap or sanitizer, a processor, and a focused energy signal receiver. The focused energy signal receiver includes a reflector for reflecting at least a portion of the focused energy signal back to a transmission source and a converter for converting at least a portion of the focused energy signal into an output voltage. The dispenser further includes charge control circuitry and one or more capacitors. The charge control circuitry monitors the output voltage of the converter. If the output voltage of the converter is above a threshold, the one or more capacitors receive a charging current.