If Required we now supply an Automatic Gravity Battery Electrolyte Filling System (below), that provide a maintenance free operating system, made from 6mm Plastic Air line fittings.

This Automatic Electrolyte filling system works on the principle that, Air is Only drawn into the Distilled Water Tank when the Electrolyte in any Cell Drops below any inserted Stainless Steel tube, as only then will Air be drawn into the watering tube & bubble back into the Reserve Tank, and then Distilled Water will flow back down into the Cell, to the level the Tubes are inserted.

A Dangerous situation is created when the Electrolyte level falls below the Nickel Iron Plates in any Cell, as then a Cell can Overheat & Short !

IMPORTANT: The Distilled Water Filling Tank must be Vacuum Sealed (No Air enters the Tank except from the battery Cells), or the Distilled Water will simply drain out and over fill the battery cells ! The 6mm Stainless Steel Tubes that pass through the white Transport Caps, must have a very Tight Fit, so they Won't accidentally slip & drop into the battery & possibly cause a Short !

The Parts needed for an Automatic Battery Fill Kit Cost $350.00;

An old 20lt Oil Container can be Cleaned & Used as Distilled Water Container (Not supplied).
1x IBC Container Cap with 20mm (1/2") ID Thread ($4.50).
1x 20mm ~ 12.5mm Brass Reducer ($6.50).
1x 12.5mm Brass Adapter down to 6mm Quick Fit Connector ($4.50).
20mt 6mm Clear Tubing for Batteries, inc. 10mt back to the Water Tank location ($18.00).
1x 6mm In-Line Tap, Stops the Flow of Distilled Water until re-filling is needed ($6.50).
41x 6mm T Junction Fittings ($120.00).
8x 6mm 90° Elbow Fittings for End Batteries ($18.00).
14x 500mm Lengths of Stainless Steel Tubes, needs to be Cut into approx. 140mm Lengths & inserted into the Battery between the Max. & Min. Electrolyte Level, will be different for each sized Battery ($112.00).
National Postage $25.00


20lt Distilled Tank Cap.	20mm~12.5mm Brass Reducer.	12.5mm~6mm Quick Fitting.

6mm Line Tap is used to stop Distilled Water flowing into the Batteries when the Reserve Tank is being re-filled.	The most Common Part used to plumb the Distilled Water into the Batteries.	The Stainless Steel Filling Tube fits into the Lower orifice.

6mm Elbows are used for the Batteries on the End of a row. 14x 500mm Stainless Steel Tubing (OD=6mm, ID=4mm), Cut so that the bottom of the Tubes sits between the Max. & Min. Electrolyte Level.

Quick-fit Components.	Other Fittings.	Connection examples.

Installation of Automatic Watering System;

Half fill a bucket with Water & start Removing the Transportation Caps, make sure you don't get any Electrolyte on yourself & drop them into the Bucket, Now Replace those Caps with the Red Filling Caps to stop any insects etc. entering the Cells during this time. Stir & rinse the Transport Caps to make sure they are clean & free of electrolyte.
First ONLY Test One Cap by Drilling through the Larger hole on the bottom of the Cap with a 5.5mm Drill bit, the large hole should already be 3/4 of the way through the Cap. So slowly Drill all the way through the Cap, in most Caps you will end up with Plastic Swarf (wast shavings) that stays inside the Cap, you can Blow this out from either end of the Cap (you don't want Plastic Floating around in the Electrolyte).
Now line-up One Cap on the side of a Battery & measure the Distance from the maximum Electrolyte mark to the Top of the Cap & add approx. 20~30mm to the Length. As that is the Length you need to Start Cutting the 6mm diameter Stainless Steel rods to, Divide the Length you measured into 500mm ...It is Better to have the S/Steel Tube Further into the Electrolyte that Higher than the maximum Level !
Now You have Drilled a 5.5mm hole Force the S/Steel Rod from the bottom hole, by Drilling a smaller 5.5mm Hole through the Transportation Caps, you will need to Slowly Tap the Rod through the Top hole with a Hammer as this will be a very tight fit, so the Cap will Not slide easily, leave 20~25mm protruding out the Top of the Cap, as that is to Fit the T piece connector on to.
The battery cell should have a separate Tiny Breathing Hole in the Top & bottom of each Cell, this is to let Air In & Out of each Cell, so the System Works correctly !
If you do this successfully, you can repeat this for all the Caps.
The Next job is to Cut all the airline segments to the Correct Length, not all the airlines will be the length, as some batteries will be closer or further away from each other.
It is VERY IMPORTANT that you insert the airline ALL the way in until you Feel it hit the End Stop, past the O ring, if you don't push the Airline in to the Hilt the System will Let/Leak air in at the Joint ! Causing the Cells to be Overfilled !
There are more Details to explain ...like smoothing the Outer ends of the S/Steel Tubing, makes it easier to force the Tubing into the Caps to produce a Very Tight Fit ...if it easily slide in the Cap you will need to Silicon it into the Cap ...Also chamfering the inside of the S/Steel Tubes with a larger Drill bit is advisable, as when you Cut the Tubing the inside mat be partially blocked restricting the distilled water from Flowing freely. ...Come back soon for more updated information !