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In reference to William's comment about equalizing VRLA batteries,
see page 17 of Concorde Battery's SunXtender technical manual,
available online at
<a class="moz-txt-link-freetext" href="http://www.sunxtender.com/pdfs/Sun_Xtender_Battery_Technical_Manual.pdf">http://www.sunxtender.com/pdfs/Sun_Xtender_Battery_Technical_Manual.pdf</a>.<br>
They instruct charging these AGM VRLA batteries at C/24 until 2.60
VPC is achieved, plus 4 hours, to recover from deep discharge,
adding that this process can take 16 to 20 hours.<br>
Allan<br>
<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
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<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
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On 1/6/2012 11:16 AM, William Miller wrote:
<blockquote
cite="mid:6.0.1.1.2.20120106101309.03006e08@millersolar.com"
type="cite">Larry:
<br>
<br>
I always thought that any breach of a valve in a VRLA battery was
a sign of a failure. I recently spoke with a technician at MK
Batteries and learned that venting and/or seepage is not uncommon
and not a sign of failure.
<br>
<br>
I have also heard in the distant past and then read recently on a
manufacturer's web site that VRLA batteries can and should be
equalized. The parameters are different from an FLA battery.
<br>
<br>
William Miller
<br>
<br>
<br>
<br>
<br>
At 09:12 AM 1/6/2012, Larry Crutcher, wrote:
<br>
<blockquote type="cite">You beat me to that one, Kent. Also, if
your VRLA battery is emitting any gas, you've got trouble.
<br>
<br>
Larry Crutcher
<br>
Starlight Solar Power Systems
<br>
</blockquote>
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