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

[Carl Emerson, Free Power Ltd.]

<x-flowed>
Hi there,

Just to say that commonly the cells at the extreme ends of the bank 
loose their electrolyte faster.  I have no explanation for this and it 
may be related to the issue under discussion.

Cheers

Carl Emerson.

Bruce Geddes wrote:

>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
>>
>>
>>    
>>

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

TOPICA - Start your own email discussion group. FREE!
http://www.topica.com/partner/tag02/create/index2.html
--^----------------------------------------------------------------




</x-flowed>