> On 21, May 2006, at 1:12, Phil Rushton wrote:
>
>> I am sure he wouldn't drink some old home brewed beer from his
>> F-I-L's shed? .... or would he....... :-)
>
> Of coursh I wouldln't.
>
> Hic
>
> Beeky
>
> PS Thanks for the info Ron, that's just what I expected, but what
> would these dissolved thingies do inside the battery ? Don't need an
> urgent response as it'll be spring 2007 before the cells get their
> next regular maintenance.
Anything ionic (i.e. salts, etc) will play havoc with the normal reactions
of the battery, all we expect to have in the battery is
Water
Lead
Lead dioxide
Sulphuric acid
(plus an amount of lead sulphate, depending on the state of charge)
Add some ions (chloride, carbonate, bicarbonate, etc - e.g as found in tap
water), then you get the lead salts of these, but then those salts may not
be reversible by charging and/or might stay dissolved and/or might break up
and fall to the bottom of the cell (and short out the plates) - plus you
would get the calcium and magnesium sulphate coating the plates. Dissolved
plastic is unlikely to react, but adding it to the acid solution might cause
it to be precipitated onto the plate, thus reducing the working area.
Ron Jones
Process Safety & Development Specialist
Don't repeat history, see unreported near misses in chemical lab/plant
at http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm
not certain about the universe. ~ Albert Einstein
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