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<TITLE>Two batteries with an MX60 in between (was big bank)</TITLE>
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<P><FONT SIZE=2 FACE="Arial">Folks,</FONT>
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<P><FONT SIZE=2 FACE="Arial">As you may recall I have 4 strings of 4 batteries parralleled into a single bank. Each string is 1690Ah @ 48V. The charging system for this bank is undersized. I think I would do better by reducing the bank size by running only 3 strings. However, I don't want to strand the fourth string.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">I am wondering what rotating the strings might look like. One string would be removed from the bank for a period of perhaps a month. Then it would go back on-line and onother string would be taken off-line, and so on.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Right away I worry about accelerating the divergence of the strings in terms of resistence to charging. Going to three stings would reduce this problem, but trying to rotate strings might </FONT></P>
<P><FONT SIZE=2 FACE="Arial">make it worse.</FONT>
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<P><FONT SIZE=2 FACE="Arial">In any case, I would want to float out the dormant string as best I could while it is off-line.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Would it work to attached the DC input of an MX60 to the on-line bank of three strings, and the output to the off-line sting, and let the MX keep the off-line string in float?</FONT></P>
<P><FONT FACE="Arial"> </FONT>
<BR><FONT SIZE=2 FACE="Arial">Mark Frye</FONT>
<BR><FONT SIZE=2 FACE="Arial">Berkeley Solar Electric Systems</FONT>
<BR><FONT SIZE=2 FACE="Arial">303 Redbud Way</FONT>
<BR><FONT SIZE=2 FACE="Arial">Nevada City, CA 95959</FONT>
<BR><FONT SIZE=2 FACE="Arial">(530) 401-8024</FONT>
<BR><A HREF="http://www.berkeleysolar.com"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Arial">www.berkeleysolar.com</FONT></U></A><FONT SIZE=2 FACE="Arial"> </FONT>
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