I would send them back. If used, I would not install them along with batteries of differing age, or even from a different batch.
-------- Original Message --------
Subject: [RE-wrenches] AGM discrepancy
From: Drake <[email protected]>
Date: Fri, August 15, 2014 10:57 am
To: RE-wrenches <[email protected]>
Hello Wrenches,
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.
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.
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?
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?
What would you do in with the grey batteries? Any insight is welcome.
Thanks,
Drake
Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
http://athens-electric.com/
_______________________________________________
List sponsored by Redwood Alliance
List Address: [email protected]
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://www.mail-archive.com/[email protected]/maillist.html
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
www.members.re-wrenches.org
_______________________________________________ List sponsored by Redwood Alliance
List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
