<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Sure sounds like you lost a cell... what's the resting voltage of that battery compared to the other three? (-1/6?) db<br></div><div><br></div><div><br>Dan Brown<br>Foxfire Energy Corp.<br>Renewable Energy Systems<br>(802)-483-2564<br><a href="http://www.Foxfire-Energy.com">www.Foxfire-Energy.com</a><br>NABCEP #092907-44<br><br></div>
<blockquote id="replyBlockquote" webmail="1" style="border-left: 2px solid blue; margin-left: 8px; padding-left: 8px; font-size: 10pt; color: black; font-family: verdana;">
<div id="wmQuoteWrapper">
-------- Original Message --------<br>
Subject: [RE-wrenches] Bad Cell<br>
From: "Mark Frye" <<a href="mailto://markf@berkeleysolar.com">markf@berkeleysolar.com</a>><br>
Date: Sun, June 20, 2010 1:12 pm<br>
To: <<a href="mailto://re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
<br>
<title>Bad Cell</title> <div><font face="Arial" size="2">On a battery back with 4 - 12v HUP 1690 Ah wired for 48VDC, I went out the other day and "charged" up the bank and give it a fair amount more at an equalizing voltage.</font></div> <div><font face="Arial" size="2">I checked the specific gravity pretty much right away with the batteries still warm and bubbling. All cells read about 1.260, except a single cell that appears to have an graivity of 1.000.</font></div> <div><font face="Arial" size="2">Is this normal for a single cell in a bank to crap out completely while all the others remain in fairly good condition?</font> </div> <div><font face="Arial" size="2">The bank is 6 years old and has been equiped with a Watermaster system from day one.</font> </div> <div><font face="Arial" size="2">I can't believe that I have somehow washed out 3 gallons of electrolyte by overfilling or something.</font> <br><font face="Arial"> </font> <br><font face="Arial" size="2">Mark Frye</font> <br><font face="Arial" size="2">Berkeley Solar Electric Systems</font> <br><font face="Arial" size="2">303 Redbud Way</font> <br><font face="Arial" size="2">Nevada City, CA 95959</font> <br><font face="Arial" size="2">(530) 401-8024</font> <br><a target="_blank" href="http://www.berkeleysolar.com"><u><font color="#0000ff" face="Arial" size="2">www.berkeleysolar.com</font></u></a><font face="Arial" size="2"> </font> </div> <hr>_______________________________________________<br>
List sponsored by Home Power magazine<br>
<br>
List Address: <a href="mailto://RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Options & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out participant bios:<br>
<a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br>
<br>
</div>
</blockquote></span></body></html>