<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">HI Ray,<div class=""><br class=""></div><div class=""><div class="">I\u2019ll add that they use lots of water requiring lots of maintenance.</div><div class="">Their efficiency is between 70 and 80%.</div><div class="">The reason that the railroad and telecomm have used them in remote applications is that chemistry doesn\u2019t care about cold or hot.&nbsp;</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">And given that they cost (95%) almost as much as a top end Lithium battery, I\u2019d go for the Lithium if someone has that kind of cash to throw around.</div><div class=""><br class=""></div><div class="">Jay</div><div class=""><br class=""></div><div class="">Peltz Power.</div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Nov 21, 2018, at 10:37 AM, Ray &lt;<a href="mailto:ray@solarray.com" class="">ray@solarray.com</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class="">
  
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  <div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Charge efficiency is really low,&nbsp; Charging parameters can be hard
      to get right, Voltage is not stable under heavy loads, and they
      are really expensive to boot.&nbsp; I've never sold them for these
      reasons, but I have replaced some sets that customers were unhappy
      with.&nbsp; They seem to work OK, only if there are no large surge
      loads, and the battery and array are sized large enough.&nbsp;
      Unfortunately because of the cost, folks seem to really under size
      them, which only exasperates the above issues.</p><p class="">There's good reasons this old battery chemistry has not been
      widely adopted by the solar industry.&nbsp; It does have its place, and
      I understand the train industry uses it because A) they have cheap
      on grid charging available, so efficiency doesn't matter, and B)
      they have telecomm type loads with very little surge.<br class="">
    </p>
    <pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
    <div class="moz-cite-prefix">On 11/21/18 10:55 AM,
      <a class="moz-txt-link-abbreviated" href="mailto:dan@foxfire-energy.com">dan@foxfire-energy.com</a> wrote:<br class="">
    </div>
    <blockquote type="cite" cite="mid:20181121105556.720a661d8db719b1f2ad39509c9edaa3.3e576e639b.wbe@email04.godaddy.com" class="">
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        <div class="">Hi Guys, I have a potential customer inquiring about
          installing a pre packaged Iron Edison system.. I recall
          hearing strange stories about Ni-Fe batteries but don't recall
          the specifics. I have done a few searches with mixed results..
          And have friends advising I run like a Rabbit.. Thought I'd
          run it by you folks for an update..</div>
        <div class=""> Thanks, and Happy Turkey Day.</div>
        <div class=""><br class="">
        </div>
        <div class="">db<br class="">
        </div>
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        </div>
        <div class=""><br class="">
          Dan Brown<br class="">
          Foxfire Energy Corp.<br class="">
          Renewable Energy Systems<br class="">
          (802)-483-2564<br class="">
          <a href="http://www.foxfire-energy.com/" moz-do-not-send="true" class="">www.Foxfire-Energy.com</a><br class="">
        </div>
      </span>
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