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<div class="moz-cite-prefix">I'd second that. Let somebody with a
12 v system play with the pair of gray ones. <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>
On 8/15/2014 5:19 PM, <a class="moz-txt-link-abbreviated" href="mailto:mark@hurshtown.com">mark@hurshtown.com</a> wrote:<br>
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<div>I would send them back. If used, I would not install them
along with batteries of differing age, or even from a
different batch.<br>
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-------- Original Message --------<br>
Subject: [RE-wrenches] AGM discrepancy<br>
From: Drake <<a moz-do-not-send="true"
href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a>><br>
Date: Fri, August 15, 2014 10:57 am<br>
To: RE-wrenches <<a moz-do-not-send="true"
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
<br>
Hello Wrenches, <br>
<br>
A batch of Full River L-16 DC 400-6 batteries came in, which
were purchased at a very good price from a distributor. Of
the 16 ordered,14 came in blue cases and were labeled 415 AH
and 2 came in grey cases and were labeled as 400 AH. <br>
<br>
Calling my distributor and Full River tech support, many
different stories have been told. At this point, it seems
that the grey cases were discontinued in 2011. According to
my supplier, the two types of batteries are identical
inside, only the case and AH designation are different.<br>
<br>
Interestingly enough, the grey case batteries hold a
slightly higher voltage than the blues. The blues (which are
still wired together from their maintenance charge) show
12.96V for 12 V sets. The grey set shows 13.1 V. This is
after at least two days off the charger. All the batteries
were charged together in a 12 V series-parallel
configuration. Is this voltage normal for AGMs? <br>
<br>
I'm considering sending the two greys back with two of the
blues (one 24V set). Can the grey case batteries still be
good if they were manufactured in 2011? <br>
<br>
What would you do in with the grey batteries? Any insight is
welcome.<br>
<br>
Thanks,<br>
<br>
Drake <br>
<br>
Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a moz-do-not-send="true" target="_blank"
href="http://athens-electric.com/">http://athens-electric.com/</a>
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