Dick:

     It is my understanding that the REAL issue is the Hz....in America we
are on 60 cycle, in many countries overseas they are on 50...this means that
while easy to convert from 120 to 220 the pump will run slower.. possible
motor burn out...someone suggested that the charger can be recharged then use
the pump on battery...this is an option. check the bottom of the pump for
Hz...some are 50 or 60....

                                   Patricia