Battery Life in Grid-Tie Systems [RE-wrenches]

[Bruce Geddes]

Hi Clive,
                I agree with your comments.  Do you have any idea about this
belief that the first cell on the +ve end of the battery (or in some cases
the -ve end) is the first to fail?  I have seen this idea promoted
frequently but have never found a good explaination for it and it does not
seem to stack up electrically.  I have seen cells fail randomly through
batteries so think it an urban myth.

Cheers,
Bruce

> Hi Bruce,
> Three things  that cause the pos. plate to bulge: overcharging, too long
on
> float duty ( batteries on float duty should have a periodic discharge test
> to check that they do in fact have the capacity to do the job they are
there
> for ) Equilise charge too often..
> The pos. plate always corrodes first. To counteract this inhibitors are
> included  in the mix. and   pos. plates is cast under high pressure to
make
> it more dense than the neg.
> The Plante type cells had  pure lead plates with no inhibitors, but they
> were design for float duty.
>  Cheers Clive
>
>

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