OK, I just read it again and the comments are kind of interesting. First, a lot of people don't know how batteries work, and second, people are happy to jump at about anything even if they have no idea what they are doing. Do you dump the old electrolyte before or after charging? There is no way the resulting electrolyte would be "totally noncorrosive" unless all the sulfates were cleaned off the plates before refilling so a test of a new, unfilled battery would be interesting. Even if all it is is a new cheaper type of EDTA that would not be a bad thing but from the sounds of the first link you end up with a completely different battery.