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<div class="moz-cite-prefix">I'm experimenting with a panel I built
myself that is series'ed and paralleled to produce a Voc of ~3.3
volts and ~10-12 amps which can be alligator clipped to slacker 2V
cells, leads running outside to a sunny locale. It's certainly
not the quickest/best solution but worth a try in some instances
and doesn't burn up many gallons of fuel cooking an entire pack to
save a couple slackers. Its pretty easy to find PV cells and the
rest of it to make your own...and it was kinda fun.<br>
<br>
Bill<br>
<br>
<img alt="" src="cid:part1.06050101.03000605@psln.com"
height="103" width="306"><br>
<br>
On 12/17/2015 3:59 AM, Chris Mason wrote:<br>
</div>
<blockquote
cite="mid:CAG6C1qnM1w32P2ZRyehXtemTPtir98LKh9LFbJYh4LvwCrJfPg@mail.gmail.com"
type="cite">
<div dir="ltr">I have a customer that has had AGM batteries in the
Caribbean for many years without any sign of capacity loss,
but...they air condition (?) the room they are in, and they do
not use any discharge, they are purely setup as a UPS style
system. Unless the power fails, all the power is exported, and
they use grid power.
<div>When using AGM as an offgrid solar system, they last about
three years here.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Dec 16, 2015 at 9:44 PM, jay <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:jay.peltz@gmail.com" target="_blank">jay.peltz@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">HI Luke,<br>
<br>
Without knowing what the charging parameters its really hard
to know whats going on.<br>
<br>
And this false issue with life span is years really gets me.<br>
Batteries are measured in cycle life, period, So to say a
IND battery will get 15 to 20 years is bunk.<br>
It’ll get the cycles based on DOD, if its charged correctly,
watered and the sun is in a good phase and, and and,<br>
<br>
I’ve got a guy who’s worn out his Hup’s in around 5-6 years.<br>
But how would any other but an IND battery worked with that
hard of a life, yikes, L-16’s would have been a set a year.<br>
<br>
But I’m guessing his 11 year old batteries could be quite
done. And he is caught in the perfect bind.<br>
Do you spend money on replacing some of the cells?<br>
If it was my client, I’d say no, he’d be throwing good money
after bad.<br>
<br>
jay<br>
<br>
peltz power<br>
<div class="HOEnZb">
<div class="h5"><br>
<br>
<br>
<br>
> On Dec 16, 2015, at 12:50 PM, Dana <<a
moz-do-not-send="true"
href="mailto:dana@solarwork.com"><a class="moz-txt-link-abbreviated" href="mailto:dana@solarwork.com">dana@solarwork.com</a></a>>
wrote:<br>
><br>
> We recommend an EQ when there is a 0.02 SG
differential on any one cell to the rest of the pack,
use a refractometer for SG readings, install watering
systems with a electrolyte port or water the battery
bank ourselves, & do not do systems without a
charging power backup.<br>
><br>
>
----------------------------------------------------------------------------<br>
> Dana Orzel<br>
> Great Solar Works, Inc - NABCEP # 051112-136<br>
> E - <a moz-do-not-send="true"
href="mailto:dana@solarwork.com">dana@solarwork.com</a>
- Web - <a moz-do-not-send="true"
href="http://solarwork.com" rel="noreferrer"
target="_blank">solarwork.com</a><br>
> O - <a moz-do-not-send="true"
href="tel:970.626.5253" value="+19706265253">970.626.5253</a>
C - <a moz-do-not-send="true" href="tel:208.721.7003"
value="+12087217003">208.721.7003</a><br>
> "Responsible Technologies for Responsible People
since 1988"<br>
> Please consider the environment before printing
this email.<br>
><br>
><br>
><br>
> -----Original Message-----<br>
> From: RE-wrenches [mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
On Behalf Of Dave<br>
> Sent: Wednesday, December 16, 2015 10:23 AM<br>
> To: 'RE-wrenches'<br>
> Subject: Re: [RE-wrenches] HuP Conundrum<br>
><br>
> Luke,<br>
><br>
> Contac HUP for specific advice. You've probably
already done that?<br>
><br>
> What comes to mind:<br>
> Since you have two series strings, run the house on
one string of all good cells.<br>
><br>
> Pull out the weak cells and charge them as per
HUP's advice.<br>
><br>
> I'm guessing that this problem has happened because
the homeowner did not properly charge the batteries.<br>
> Homeowner most likely did not use a hydrometer upon
EQ'ng the cells.<br>
> Homeowner thought the cells were fully charged and
equal but obviously they were not.<br>
> Record keeping, log books etc.. for people caring
for expensive batteries are well worth the effort.<br>
><br>
> David Palumbo<br>
> Independent Power LLC<br>
> 462 Solar Way Drive<br>
> Hyde Park, VT 05655<br>
> <a moz-do-not-send="true" href="tel:802-371-8678"
value="+18023718678">802-371-8678</a> cell<br>
> <a moz-do-not-send="true" href="tel:802-888-4917"
value="+18028884917">802-888-4917</a> home<br>
><br>
><br>
><br>
><br>
><br>
> -----Original Message-----<br>
> From: RE-wrenches [mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
On<br>
> Behalf Of Luke Christy<br>
> Sent: Wednesday, December 16, 2015 12:01 PM<br>
> To: RE-wrenches<br>
> Subject: [RE-wrenches] HuP Conundrum<br>
><br>
> Hi Friends,<br>
><br>
> With all of the battery threads going on right now
I figured it would be a<br>
> good time to start another one.<br>
><br>
> I have a customer with a large off-grid system who
has just started having<br>
> trouble with a bank of HuP batteries. This system
is 48V with 8x 12V<br>
> 6-85F-27S batteries in two series strings. Charging
is supplied by around 10<br>
> kW of PV.<br>
><br>
> I didn't install the system and the customer has
always taken care of the<br>
> maintenance and watering himself. He has seemingly
been pretty diligent<br>
> about taking care of things, including equalizing
on a regular basis.<br>
> However, recently he started having voltage
problems and when I made a site<br>
> visit to check on the batteries, I found that 3 of
the 8x 12V batteries each<br>
> had a cell with SG so low it wouldn't register on
my hydrometer.<br>
><br>
> Obviously this is a problem, and owing to some
complicating factors I'm not<br>
> really sure how best to address the issue.<br>
><br>
> Replacing the entire battery bank will be
unbelievably expensive, especially<br>
> given that the house is in a remote location and
there is difficult access<br>
> to the battery room. To add a another factor, the
house is currently<br>
> unoccupied while the owner tries to sell the
property, so he is not exactly<br>
> eager to invest a lot of money into battery
replacement.<br>
><br>
> The batteries are only 11 years old, so they should
theoretically have quite<br>
> a bit of life left in them. Perhaps those of you
with more experience with<br>
> larger batteries can advise. Can the cells be
resurrected with careful<br>
> charging and equalizing?<br>
><br>
> What would you do?<br>
><br>
> Thanks as always for opinions and advice.<br>
><br>
> Luke Christy<br>
><br>
> NABCEP Certified PV Installation ProfessionalT:
Certification #031409-25<br>
> NABCEP Certified Solar Heating InstallerT:
Certification #ST032611-03<br>
><br>
><br>
> Solar Gain Services, LLC<br>
> PO Box 531<br>
> Monte Vista, CO. 81144<br>
> <a class="moz-txt-link-abbreviated" href="mailto:SGSRenewables@Gmail.com">SGSRenewables@Gmail.com</a><br>
> <a moz-do-not-send="true" href="tel:719.588.3044"
value="+17195883044">719.588.3044</a><br>
> <a moz-do-not-send="true"
href="http://www.sgsrenewables.com" rel="noreferrer"
target="_blank">www.sgsrenewables.com</a><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
<br>
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-- <br>
<div class="gmail_signature">
<div dir="ltr">Chris Mason
<div>
<div style="color:rgb(136,136,136)"><span
style="font-size:13px">NABCEP Certified Solar PV
Installer™</span></div>
<div style="color:rgb(136,136,136)"><span
style="color:rgb(34,34,34)">Solar Design Engineer</span></div>
<div style="color:rgb(136,136,136)"><span
style="font-size:13px">Generac Generators Industrial
technician</span></div>
</div>
<div style="color:rgb(136,136,136)"><span
style="font-size:13px"><br>
</span></div>
<div><a moz-do-not-send="true"
href="http://www.cometenergysystems.com" target="_blank">www.cometsolar.com</a></div>
<div>264.235.5670</div>
<div>869.662.5670</div>
<div>Skype: netconcepts</div>
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