HHO Generator Kit Maintenance

Mixing Electrolyte

ALWAYS PRE-MIX THE ELECTROLYTE: "First fill your OPEN container with the amount of water desired and then add electrolyte slowly whilst stirring gently"...........

"If you do it the other way around, (KOH or NaOH) first and then water you will get a VERY VIOLENT REACTION and possibly sustain chemical burns to your person."

When adding denatured alcohol to the Potassium Hydroxide and distilled water for your winter mix. Let the mixture sit, uncontained/uncapped, for about 30 minutes before adding the mixture to the reservoir in the HHO generator device.

How Much Electrolyte and What Concentration do I need?

You will only need 1 liter of electrolyte water to initialize any of our Hexagon Dry Cells including filling our electrolyte tank, so be prepared to store the leftover in a labeled plastic bottle that seals well for when you may need it again.

Each Cell size has a maximum amperage rating. With an electrolyte concentration of 3% they will go just under that rating and with 5% just over.


For a 5% solution you can pour a 50g satchel of electrolyte into 950 ml's of distilled water, and for a 3% solution you can pour a satchel into 1600 ml's of distilled water.

Fill the electrolyte in the tank no more than 60% (just past half way, 1/2 an inch above the middle fitting) because it will expand when hot and there will be no room for the HHO gas produced.

Then if overtime if you can't get to the desired amperage add small amounts of additional KOH till the amperage is reached or the cell does not respond to additional electrolyte because the concentration is too high.

The cell will usually keep responding until you reach 28% concentration.

Highly concentrated electrolyte usually means more HHO gas being produced but having too much concentration may have Drawbacks.

For example: Severe overheating to the point that you will damage your cell or even have leaks of caustic fluids in your engine bay.

The auto-hydrogen PWM shows the duty cycle in the lower left corner of the LCD display, how much electrical energy is being applied. When the cell is still cold you should have the lowest possible duty cycle with the desired amps in the display. As the cell heats up it will keep the amps to what has been set by increasing the duty cycle.

Lowest possible duty cycle with the desired amps means the electrolyte is just right. As the cell heats up the duty cycle will increase a little.

Note: Without PWM control you will need a way to measure amps or you won't know if the cell has gone into thermal runaway and is overheating.

Water Consumption Guide

Water is converted into HHO gas - so as long as your generator is on and drawing current it consumes water and generate gas. The higher the current draw supplied for conversion the faster water is consumed.

The molecular laws of chemistry teach us that 1 liter of water has enough hydrogen and oxygen molecules to generate 1860 liters of HHO gas.

So for various gas generation rates we can calculate how long a liter of water will last.

hho water consumption

Your water consumption will vary a bit because production rate will not be exactly constant and some water may escape into the engine as steam vapor, but this is a good estimate for planning how often you may need to refull your distilled fresh water tank.

When you top off the unit with distilled water you do not have to add additional electrolyte, just distilled water!