<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><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><br></div>
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Subject: [RE-wrenches] AGM discrepancy<br>
From: Drake <<a 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 href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
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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 target="_blank" href="http://athens-electric.com/">http://athens-electric.com/</a> <br><br> <hr>_______________________________________________<br>
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