A Do It Yourself U-solder simple water level circuit with a 555 timer and mosfet that works from 3 probes that you place down in your cell, to whatever level you choose. It works from 12volts, and send 2 wires to a 12v. pump to a water tank reservoir. The circuit is always "on" when the electrolyte water reaches the high level exposed wire tip, the pump stops. When the cell water level goes past the lower level probe wire, it fills back up to the high level probe and stops. Very simple. Nice for sealed cells and or cells that are hard to get to, to fill them back up with water. Longer drives without stopping to fill up your cell by hand. Perfect for the "JoeCelleRator" cells & for diesel truckers. Works with electrolyte solution of 10%.  Heavier concentrate's (20%) will require a 500k resistor, insterad of the 1M resistor that comes with this kit. Learn more here.

Designed by Les Banki who gives his circuit design away for mankind.

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