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    William,<br>
    You might also check out the Concorde SunXtender PVX-4050T,
    <a class="moz-txt-link-freetext" href="http://www.sunxtender.com/solarbattery.php?id=30">http://www.sunxtender.com/solarbattery.php?id=30</a>. We have never had
    a failure, and we have one pair of PVX-2580s in off-grid use since
    2000. Also, they're manufactured in SoCal, so freight should be
    moderate.<br>
    Allan<br>
    <br>
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      <font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
      <small><a href="mailto:Allan@positiveenergysolar.com"><font
            color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
        face="Times New Roman, Times, serif"><br>
        <span style="font-size: 10pt;">NABCEP Certified Photovoltaic
          Installer<br>
          NABCEP Certified Technical Sales Professional<br>
          New Mexico EE98J Journeyman Electrician<br>
          <b>Positive Energy, Inc.</b><br>
          3201 Calle Marie<br>
          Santa Fe, New Mexico 87507<br>
          <b>505 424-1112</b><br>
          <a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
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                w:st="on"></st1:state><st1:postalcode w:st="on"></st1:postalcode></st1:place></font><b
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    <br>
    On 6/27/2011 4:33 PM, William Miller wrote:
    <blockquote
      cite="mid:6.0.1.1.2.20110627152525.0315ddc0@millersolar.com"
      type="cite">
      Colleagues<br>
      <br>
      I need to replace batteries for a customer.&nbsp; They have Trojan L-16
      batteries in an infrequently occupied vacation home.&nbsp; Maintenance
      has been an issue due to the infrequency in which the customer is
      on
      site.&nbsp; I think VRLA batteries are indicated.<br>
      <br>
      The enclosure is built for L-16 size batteries so it would be
      ideal to
      find VRLA batteries the same size.&nbsp; I find that Fullriver and US
      Battery offer batteries that meet the size specification.&nbsp; Do any
      of
      you have experience with these batteries?<br>
      <br>
      I notice that Trojan and MK have abandoned the threaded stud
      connections
      in favor of flags.&nbsp; This makes sense as we have seen some studs
      pull
      out.&nbsp; The Fullriver and US Battery have the dual threaded stud /
      automotive terminals.&nbsp; Have any of you had similar failures with
      the
      threaded studs?<br>
      <br>
      Thanks in advance,<br>
      <br>
      William<br>
      <br>
      <br>
      <br>
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        <p>
          <font size="3">William Miller <br>
            Miller Solar<br>
            Voice :805-438-5600<br>
            email: <a class="moz-txt-link-abbreviated" href="mailto:william@millersolar.com">william@millersolar.com</a><br>
            <a moz-do-not-send="true" href="http://millersolar.com/"
              eudora="autourl">http://millersolar.com<br>
            </a>License No. C-10-773985<br>
          </font></p>
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