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<div class="moz-cite-prefix">Just let him know what to expect, and
he will respect that latter when it turns out to be true. <br>
Does he need sealed batteries? I'd start talking up an industrial
grade battery for latter. After all this, he'll be ready for a
battery that's going to stay put for awhile.<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>
On 8/3/2013 7:46 PM, Mac Lewis wrote:<br>
</div>
<blockquote
cite="mid:CAOABG4-h-UsJe8ML65X6db-H_fO+rr8o-dZCQAYb3+UgtvNgDg@mail.gmail.com"
type="cite">
<div dir="ltr">Ray,
<div><br>
</div>
<div>Yes, this is an off-grid applications. I think you are
right, the battery guy sold him what he had. Pretty pricey
battery lesson twice!</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
On Sat, Aug 3, 2013 at 6:42 PM, Ray Walters <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:ray@solarray.com"
target="_blank">ray@solarray.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Mac;<br>
<br>
Is this off grid? The Intimidator is not a high cycle
life battery. I've had trouble finding exact ratings,
but its probably in the 250 to 300 cycles at 80% DOD.
I'd expect 3 years max in an off grid application. Also
the Intimidators I've seen are actually AGM, not Gel,
but I don't know. I looked on Deka's website but didn't
find any good charge set points. This is basically a
sealed RV/ Marine battery. Definitely not a top choice,
but its what the battery guys have on the shelf, so
that's what they sell.<br>
You're on to the biggest problem, pulling off opposite
corners of the bank to balance the connector resistance
between all the strings. <br>
I go out of my way not to poo poo the customer's choice,
but to make sure and let them know you can't guarantee
the performance of the system. I had almost the exact
experience just a few months ago, where the customer had
just bought a new set of Intimidators. I just told him
to use them up, no sense in worrying about it, and when
they were worn out, we'd get him something better. I
used AGM setting on the Midnite controller on that
system. Voltage set points should be his responsibility
to track down, if their gel. It keeps you from being
responsible for anything to do with the battery
performance or life. When he needs a new set, you sell
him the right stuff, set it up right, and low and behold
you'll look good when they outlast his previous sets.<br>
<pre cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
<a moz-do-not-send="true" href="tel:303%20505-8760" value="+13035058760" target="_blank">303 505-8760</a></pre>
<div>
<div class="h5"> On 8/3/2013 5:31 PM, Mac Lewis wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div dir="ltr"><span
style="font-family:arial,sans-serif;font-size:13px">Hello
wrenches,</span>
<div
style="font-family:arial,sans-serif;font-size:13px"><br>
</div>
<div
style="font-family:arial,sans-serif;font-size:13px">I
am looking for guidance with charging setpoints
for a battery that I don't have experience with.
This system was put in by another solar company
and this battery bank failed after 1.5 years.
He bought these batteries without consulting
us, but now we are stuck with them.</div>
<div
style="font-family:arial,sans-serif;font-size:13px">It
is a Deka Intimidator Gel Sealed Battery 12V 225
Ahr. It is set up as 3 strings of 4 batteries
to give a 675Ahr bank at 48V. The batteries
were not wired at opposite corners, but
inverter/charger leads were connected to the
middle string. We will fix that and other
things but I don't use Deka batteries.</div>
<div
style="font-family:arial,sans-serif;font-size:13px">What
charger setpoints would you recommend for this
battery bank? Does anyone have a good tech
contact at Deka? Anyone have any results to
report about this type of battery in a solar
application?</div>
<div
style="font-family:arial,sans-serif;font-size:13px"><br>
</div>
<div
style="font-family:arial,sans-serif;font-size:13px">Thanks
in advance</div>
<div><br>
</div>
-- <br>
<div><br>
</div>
<div><font face="'times new roman', serif"
color="#305A78"><br>
</font></div>
<div><br>
</div>
Mac Lewis<br>
<br>
<span><b><font face="Arial, Helvetica, sans-serif"
size="3">
<p align="left"><font face="Verdana, Arial,
Helvetica, sans-serif" color="#000000"><span
style="font-size:small"><span
style="font-family:arial;font-weight:normal;color:rgb(48,90,120)"><font
face="'times new roman', serif">"Yo
solo sé que no sé nada." </font><span
style="font-weight:700;color:rgb(104,104,104)"><font face="'times new
roman', serif">-Sócrates</font></span></span></span></font></p>
</font></b></span> </div>
<br>
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