I would appreciate your collected wisdom concerning prolonging the life of lead acid accumulators (car batteries).I was rather disappointed that the battery on my tractor (1953 Massey harris pony) gave up the ghost after only three seasons. Its a 6 volt, with removable bungs. When I checked the voltages I am getting only 3.2 v. The plates look ok, no deposits of sulphate. What really hurt was that the price for batteries seems to have increased by about 20% recently. In my younger days there was a product called Granville bat aid,consisting of pills to put in, one per cell. The pills were made of EDTA, (I think; ethylent di amine tetra acetic acid. This was supposed to be the only chemical compound capable of working in acid conditions for prevention of sulphate build up. Looking around on internet, I found several you tube videos proposing different answers. The first was to make up a circuit with a volt meter, a load, a diode and a vario volt source. The video showed that the circuit delivered up to 38 volts in order to charge the battery at 12v. Other solutions were to use epsom salts (magnesium sulphate), and distilled water solution then charge the battery. A more radical one was to drill a hole per cell at the base of the battery case and flush through, The hole was eventually sealed with a hot melt glue gun. The last, and most intriguing one is the electronic gadget featured below.
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Looking at how batteries are made, I suspect that if you tinker about too much, bits of red paste and so on will fall to the bottom causing a shorted cell.
What chemical reaction will precipitate sulphate from lead

What do you think about resonant frequencies......

Right. I am now going to fill my battry with H2sO4, and fire up henry before the day gets too hot.
Cordialement.
