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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Jamie,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Have you seen any change in cycle life by having the three cells
in the L16 connected in parallel instead of series? Just a question that has
been on my mind for a while.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Brian Teitelbaum<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>AEE Solar<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>James
Surrette<br>
<b>Sent:</b> Thursday, December 03, 2009 12:02 PM<br>
<b>To:</b> RE-wrenches; jryago@netscape.com<br>
<b>Subject:</b> Re: [RE-wrenches] Strings and series of batteries<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-family:"Lucida Grande","serif"'>Hi
Jeff, <o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-family:"Lucida Grande","serif"'><o:p> </o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-family:"Lucida Grande","serif"'>Not
to plug but we (and some other vendors) have 2V L-16's on offer. So you
can get 1000AH (C/20) in a series string in this more manageable size. <o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-family:"Lucida Grande","serif"'><o:p> </o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt'><span style='font-family:"Lucida Grande","serif"'>Regards,
<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-family:"Lucida Grande","serif"'><o:p> </o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;
margin-left:0in'><span style='font-family:"Lucida Grande","serif"'>Jamie<br>
<br>
<br>
James Surrette<br>
<br>
Surrette Battery Co. Ltd<br>
1 Station Rd.<br>
Springhill, NS, CAN<br>
B0M 1X0<br>
<br>
Direct: 902.597.4027<br>
Fax: 902.597.8447<br>
<br>
<br>
<br>
<br>
>>> "Jeff Yago" <jryago@netscape.com> 12/3/2009 1:16
PM >>><br>
<br>
Boy, this string on strings and series of strings is starting to string into a
very long list of string related emails!<br>
<br>
We also avoid multiple strings of batteries, but sometimes this is required to
get the right combination of system voltage and amp-hour capacity. We
also agree that 3 or more strings is not good, and we have seen many cases
where one string stays much less charged than the other strings on older
systems as terminals corrode and individual battery cell conditions start to go
south. <br>
<br>
However, for safety reasons we install a catastrophic in-line fuse in each
separate string that is sized to help prevent a "melt-down" when one
string tries to dump into another string that has a failed battery or shorted
cell. Not sure how fail-safe this is and would not protect against
small amp flows between strings due to battery temperature differences, but
feel its better than nothing. <br>
<br>
I also point out that for remote off-grid installations you sometimes have to
use smaller and easier to handle L-16 size batteries, as its hard to pack in
several one-ton tray batteries with no roads using a gater, so this means you
still need multiple strings of batteries in parallel.<br>
<br>
Jeff Yago<br>
<br>
_____________________________________________________________<br>
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