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Basically I would try to save the batteries and sell this guy what
he really needs: a better system.<br>
Obviously there is no LVD, and so this whole sad story of 8 v out of
48v, and frozen electrolyte (more like just water).<br>
He needs a real inverter/ charger and put all his loads on AC or at
least get an LVD on the DC loads.<br>
Then once you've solved the root cause, you talk batteries as a
phase 2. <br>
I've seen frozen batteries recover. First thaw with some kind of
heater, and then get them charged back up.<br>
This is a 120% over discharge, and the battery will be damaged very
quickly if not recharged.<br>
They are recoverable, but lost some life. Now the clock is ticking.<br>
He should be able to limp these along and start saving for a new
set before next winter. <br>
And you will have another loyal customer.<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>
<div class="moz-cite-prefix">On 12/3/2015 10:00 PM, frenergy wrote:<br>
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Larry, et al.<br>
<br>
Yes, good point< I should have mentioned the batteries
are only 1 1/2 years old. There are many of the first time
homeowner mistakes going on here...not a good site for winter sun
due to tree shade, batteries in cold environment, didn't mention a
recently sporadically working CC, etc. Its the whole enchilada. <br>
<br>
Though I just met the customer he's a nice guy, burned by
the first dealer and very un-solar-educated. I want to help him
but he has very few funds. After a thorough thaw, we thought we
would "test" 2 batts on a car trickle charger (his friends' house)
to see if/how they respond. I've been training him on monitoring
temps, electrolyte, keeping the amps low for the first many hours
and watching, documenting voltage. If he wants to spend his time
doing this to see if some life can be scratched out of all that
sulphation, I'm willing to mentor him...for now.<br>
<br>
I know we been in this discussion before but the frozen
cells were a new twist for me. Thanks you guys,<br>
<br>
Bill<br>
<br>
<br>
<div class="moz-cite-prefix">On 12/3/2015 5:32 PM, Starlight Solar
Power Systems wrote:<br>
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cite="mid:BEFEEF86-0D0B-48ED-BA7A-698F394AF834@starlightsolar.com"
type="cite">
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Hi Bill,
<div class=""><br class="">
</div>
<div class="">You did not mention the age but I would bet that
the batteries have more of a problem from being deficit
charged since the owner has no alternative charge source. So
many DIY systems are poorly designed and usually underpowered.
We see T-105’s murdered in just 2-3 years. Top that off with
the likely damage from the big freeze event and I would
condemn the bank.
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class="">
Larry Crutcher<br class="">
Starlight Solar Power Systems<br class="">
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class="">
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<div class="">On Dec 3, 2015, at 7:00 AM, Feather River
Solar Electric <<a moz-do-not-send="true"
href="mailto:info@frenergy.net" class="">info@frenergy.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
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<div bgcolor="#FFFFFF" text="#000000" class=""> Hey Folks,<br
class="">
<br class="">
I came across an off-gridder yesterday whom was
getting zero support from the dealer he had purchased
his small system from, self installed, batteries in a
lightly insulated box outside. When I inspected the
electrolyte levels I discovered it was frozen in some
cells, the voltage of the 48 volt pack was ~8 volts, I
didn't check individual batteries due to these
facts...I'd seen "enough". Recently temps have been in
the high teens, though we are back up to low 30's.<br
class="">
<br class="">
He does not have a genny or battery charger! I
have a DC genny which I could use to charge these
batteries but should I waste my time and his money
trying to save them? Others' experience with this
situation?<br class="">
<br class="">
TIA,<br class="">
<br class="">
Bill<br class="">
<span id="cid:part1.08010806.07030708@frenergy.net"><FRS_working_logo,
50%.JPG></span><br class="">
<pre class="moz-signature" cols="72">--
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.frenergy.net/">www.frenergy.net</a>
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