Mixing Water and Lye for HHO Cells

How to mix Water and Lye for HHO Cells There are a lot of questions out there on how exactly to mix your electrolyte solution (water + lye)for a hho cell.
Some considerations need to be taken as to what amperage you are shooting for. Making your cell stable and not running overly hot is a good start.

For instance, my 5 cell is running around 15 amps at this time and doing well on gas production.
I started out with 3 tablespoons of lye in 1 gallon of water. At this mixture it was drawing about 6 amps, 5 on the low end and 7 on the high end after warming up.
I ran it like this for about a day conditioning the cell stainless plates. My plate gap is 3/16th of an inch. After that was done I then added another tablespoon of lye to the electrolyte mixture and the amperage draw went to 11 amps.
After running it like that for another day I then dumped the mixture and made up fresh and increased the mixture to 5 tablespoons of lye in 1 gallon of water. This made it pull 15 amps and I ran it for another day at this amperage draw.
Finally I added another tablespoon to the electrolyte mixture and this jumped the amperage up to 21 amps.

I wanted my cell to be able to run at 21 amps if I wanted it to. I installed a PWM to control the amperage and cut it back to 15 amps hot so as the cell heats up the amperage will stay at 15 amps.
So I have ended up with 6 tablespoons of lye in 1 gallon of water and this is my mixture for my electrolyte for this cell.

The 4 cell that I built and installed on my buddies Ford Escort is running with a mixture of 5 tablespoons of lye in 1 gallon of water. I did have it up to six but decided to cut it back because of the draw it was getting, 25 amps!
So the best way is to start out with a weak mixture and gradually increase the lye until you are getting the amperage draw that you want and what the cell will handle with out running hot.
I had made an experimental one in a peanut butter jar and used round plates in a stack. This cell was really sensitive to the electrolyte solution. Just a pinch to much and it would run very hot and draw way to many amps, (about 30).
It ran so hot it melted the connections coming through the lid. It really produced the gas for its size but the heat was a problem and nothing I did helped to control it. Only by cutting the solution of lye and water back to a weaker mixture did it run stable.

So in conclusion I say start with a weak mixture and gradually increase it until you are getting a good production of gas with a good amp draw for your cell. If you can stay around 15 amps and its running cool after a 30 minute run then try increasing the lye a little more to get it up to 20 amps.

You should be able to lay your hand on it and hold it there. If your cell is to hot to keep your hand on it then, cut back on the lye and or hook up a current limiting PWM.

A current limiting PWM schematic can be found on this site and was designed by Zero Fossil Fuel at http://alt-nrg.org . I put all his information in a pdf file for the one pwm version. But he has updates for it on his site as he has perfected it a little at a time. It works really great.
These type PWM‘s are a little harder to build than a simple one but are well worth the effort to build one if you can.

The simple PWM I have plans for on this site can be adjusted to control the amperage draw after the cell is hot. But when the cell is cold after first starting up the draw is a lot lower. It picks up after the cell warms up and will run for what you have it set for.

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Posted under Hydrogen Boosters

This post was written by Michael on December 4, 2008

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2 Comments so far

  1. Michael December 17, 2008 10:22 pm

    Haven’t measured it George, but I am rigging up a way to do it like everyone else with a one liter bottle. I will post it here when I get it measured.

  2. George Harding December 16, 2008 8:43 pm

    Looks really good! So how much, as in LPM, hydrogen did you end up producing on the 5 TBSP of lye/gal/25 amp generator?
    Thanks and keep up the great work! George

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