im a tech rep for the O2 generators on US Navy submarines
with our unit we generate 125 scfh of O2 and 250 scfh of H2.
at 1050 amps 50 vdc
i dont see it feasable cuz to breakdown the water youll need a lot of current and potassium hydroxide to aid in the seperation of the O2 and H2 molecules.
alot of batteries will be needed to support their claims.
heres a link where I work:
http://www.treadwellcorp.com/