On (28 Aug 96) Roy J. Tellason wrote to Alec Cameron...
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 AC> A text book I read, not recent, said that for a profoundly 
 AC> sulphated battery you should drain and save the electrolyte, 
 AC> refill with water, and "charge" at about the 40 hr rate for 
 AC> several weeks then replace the original fluid. 
 RJ> Several weeks?!  This is probably where the stories I've heard about
 RJ> "fresh acid" come from...      
 AC> It is a long time since I did that [30yrs] it seemed valid BUT 
 AC> I suspect that the main improvement was due to the draining of 
 AC> the sludge which had previously been "shorting" the plates at 
 AC> cell bottom. 
 RJ> That too,  assuming that there is enough room to get it out,  or that 
ou
 RJ> rinse it extensively.  They sure don't seem to be designed to flush out.
Where I was living at the time, the town water was very pure. With the 
attery
lying on its side and the spray head removed from the hose, I sluiced each
cell in turn so that the junk was driven horizontally to the cell base,
returning with the water flow along the cell side. I was anxious not to have
the mud driven back thru the intersticies between plates and separators. The
experiment was very successful, the battery did further good duty in the auto
but the garden lawn was unhappy for a while.
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... ......Work is much more fun than fun [Coward]
--- PPoint 1.92
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