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I only supply L-16s at my cost to clients with existing banks than have
failures. It has been hazy of course as to what is due to poor
maintenance and what is due to defective batteries. <br><br>
There was a Trojan Rep on the list. If you are still here, please chime
in. <br><br>
<br>
At 10:56 AM 8/24/2016, you wrote:<br>
<blockquote type=cite class=cite cite="">Trojan L 16s have a known issue
with premature cell failures. The T105s seem to still be fine, but
I won't sell the L16 anymore. <br>
SG readings don't even matter when you have an obvious cell
failure. Its like doing blood work on a corpse.<br><br>
<pre>R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre><font face="Courier New, Courier"></font>On 8/24/2016
8:36 AM, Drake wrote:<br>
<blockquote type=cite class=cite cite="">The batteries were tested with a
glass bulb, turkey baster type hydrometer. The SG read higher than the
scale on all the batteries. The electrolyte was clear. The batteries were
not too old, maybe three years, with some newer ones, as others in the
bank had failed. The corrosion was notable. I did not install the
batteries, so don't know if the battery jumpers were cleaned at
installation. Could terminal corrosion have aggravated the problem in
anyway?<br><br>
At 10:01 AM 8/24/2016, you wrote:<br>
<blockquote type=cite class=cite cite="">Content-Type:
multipart/related;<br>
<x-tab> </x-tab>
boundary="----=_NextPart_000_0010_01D1FDDD.B1B27F40"<br>
Content-Language: en-us<br><br>
How are you reading the SG?<br>
<br>
__________________________________________________________<br>
<b>Dana Orzel</b> <br>
Great Solar Works, Inc - NABCEP # 051112-136<br>
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<b>From:</b> RE-wrenches [
<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora="autourl">
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of
</b>Drake<br>
<b>Sent:</b> Tuesday, August 23, 2016 7:45 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Battery issue<br>
<br>
Hello Wrenches,<br><br>
I was analyzing a string of 8 Trojan L-16 batteries with badly corroded
terminals. The specific gravity read perfect on each battery. Two of the
batteries read low voltage; about 4.2 volts.It seems like one cell's
worth of voltage wasn't showing up on each battery. Has anyone seen this
before? <br><br>
What would cause this? How can the specific gravity be right?<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 href="http://athens-electric.com/">http://athens-electric.com/</a>
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