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I thought I'd post some info on Battery Temp from a few manus:<br>
HUP Solar One: do not exceed 105 F<br>
Full River AGMs: max recommended operating temp 104F<br>
and from Trojan: for every 10C increase in temperature the reaction
rate doubles. Thus, a month of operation at 35C is equivalent to 2
months at 25C. Heat is the enemy of ALL lead acid batteries. Even
small increases in temperature will have a major influence on
battery life.<br>
Their T105 RE battery has a max operating temperature of 113 F<br>
<br>
I think more batteries are hitting high temperatures than we may
realize. This info from Trojan that a battery at 95F (35C) will
only last half its rated life (at 25C) is very concerning.<br>
Once again, thanks Bob and Midnite for giving us a tool to combat
over temperature of batteries. We always knew cold was a problem,
now I'm realizing heat could be just as important.<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
<div class="moz-cite-prefix">On 5/22/2015 3:24 PM,
<a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a> wrote:<br>
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<blockquote cite="mid:555F9E8E.60200@midnitesolar.com" type="cite">
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I'm very glad to hear Midnite added the high temp disconnect to
their system. They may have saved a life.<br>
<blockquote cite="mid:555F89DE.6000302@solarray.com" type="cite">
Bob, is battery temp logged, so we could see how often a system
quits charging for high temp, and just what the battery temps
are running?</blockquote>
<br>
<br>
No, but that is on the list as are other things to data log.<br>
<br>
Hopefully the temperature is adjusted higher than it would ever
get to under normal circumstances.<br>
<br>
I could see some future systems wanting to be able to regulate
Absorb on battery temperature mixed with other<br>
parameters some day. Could get REALLY complicated if you wanted
to. We're learning more and more<br>
about what is good for batteries.<br>
<br>
boB<br>
<br>
<br>
</blockquote>
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