[RE-wrenches] Battery Damage

[Eric.Bentsen at schneider-electric.com]

Hi Will,
Flooded (or wet cell batteries) are typically much more forgiving than a 
sealed battery. Check S.G. (¡Ö1.265 at rest) and load test. 
Equalize if necessary (if >.05 difference in S.G. cell-to-cell).
Eric
_____________________________________________________________________________________ 


Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED 
STATES  |   Technical Support Representative 
Phone: +(650) 351-8237 ext. 001#  |   
Email: eric.bentsen at schneider-electric.com  |   Site: 
www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., 
Livermore, CA 94551 


*** Please consider the environment before printing this e-mail 




From:
Will White <William.White at realgoods.com>
To:
RE-wrenches <re-wrenches at lists.re-wrenches.org>
Date:
06/10/2013 05:23 AM
Subject:
[RE-wrenches] Battery Damage
Sent by:
re-wrenches-bounces at lists.re-wrenches.org



Wrenches,
 
I have a customer who¡¯s got a 24V off grid system with one string of 12 
two volt, 2000AH Power Battery brand flooded lead batteries.  The bank is 
about four years old and has been working great except the customer forgot 
to water the batteries for an extended period.  When I went out to service 
them the plates were exposed and I had to add about a gallon of water per 
battery.  These batteries have a large amount of water over the plates 
usually so I¡¯m guessing that about 1-2¡± of the top of the plates were 
exposed which is about 10% of the total plate surface.
 
So here¡¯s the question.  The bank seems to be working fine, is it likely 
that permanent damage was done?  Is there a good way to test for damage? 
Is there anything I can to do mitigate any damage done?
 
Thanks,
Will
 
__________________________________________________________________________________________
Will White
Regional Field Operations Manager ¨C New England
 
Real Goods Solar
64 Main St.
Montpelier, VT 05602
Tel: (802) 223-7804
Cell: (802) 234-3167
www.realgoodssolar.com
 
 

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