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I agree Larry, I don't have as much confidence in the Dekas, but a
cycle life chart provided by my supplier shows them equal to the
T105. IT took a mnth to get that chart to me, so who knows where it
came from.<br>
I definitely have seen lower life from the Sam's club batteries, but
again we need some good comparison data to make the case for
spending more on the Trojans for instance. <br>
As they say in computing: garbage in, garbage out. So if I use bogus
cycle numbers (as I apparently did in an earlier post) my life cost
calculations are equally bad. I've been trying for over a decade to
get this to a more exact science, obviously we've a ways to go. <br>
So far I trust my Trojan numbers ( more or less) Deka not so sure,
HUPs and other big industrial cells seem to be on target, Rolls I'm
still waiting on, but I think they're making an effort to get us the
numbers.<br>
Do you have Johnson controls or interstate numbers? I had some Exide
numbers ( I recall under 400 cycles for their GC) and those seemed
to be right, because they definitely didn't last very long. <br>
I know one thing: My customers with HUPs have had zero complaints
and I've been selling those for almost a decade. On problematic
systems that we've upgraded, the HUPs cured the problems, and
satisfied the customers. Will they last 2100 cycles? I'm not sure if
I'll last that many cycles at this point.<br>
<br>
Ray<br>
<br>
<br>
On 9/17/2011 5:03 PM, Larry Crutcher, Starlight Solar wrote:
<blockquote cite="mid:41589328969C423AA9675BEC4566866E@StarlightPOS"
type="cite">
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<div>Ray, </div>
<div>As a battery-only wrench I stock and sell many brands.
Not sure where you saw Deka = Trojan but from years of first
hand experience, Deka’s are not anywhere near Trojan in life
cycles. Also, FWIW dealers, if you sell Deka, check the
micro date code on the side of the case. I have received
pallet loads of 8D and 4D AGM’s that were over 1 year old
when delivered.</div>
<div> </div>
<div>Just for the fun of it, my opinion is that Johnson
Control (JC) is the worst performer. Just have a look at
your JC Sam's Club $68 GC2. A 1-3 year battery. About the
same for the JC Interstate green top GC2.</div>
<div> </div>
<div>Larry</div>
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<div style="font-color: black"><b>From:</b> <a
moz-do-not-send="true" title="ray@solarray.com"
href="mailto:ray@solarray.com">Ray Walters</a> </div>
<div><b>Sent:</b> Saturday, September 17, 2011 1:38 PM</div>
<div><b>To:</b> <a moz-do-not-send="true"
title="Allan@positiveenergysolar.com"
href="mailto:Allan@positiveenergysolar.com">Allan@positiveenergysolar.com</a>
; <a moz-do-not-send="true"
title="re-wrenches@lists.re-wrenches.org"
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</a>
</div>
<div><b>Subject:</b> Re: [RE-wrenches] battery cycle
life, US Battery</div>
</div>
</div>
<div> </div>
</div>
<div style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY:
'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT:
normal; TEXT-DECORATION: none">Geez, I got that file on a
model specific google search. It has a picture of a 4000
series flooded cell to the side, no other labeling, and it
matched my cross check in the AEE catalog (1000 cycles at
50% DOD). I can't seem to get to that page within the
website.....<br>
The chart you sent is labeled series 4000, and is labeled
1280 cycles @50% DOD (very definitive, very different). Did
both myself and AEE indeed use the wrong data?(I see the AGM
tag) I have another s460 spec sheet claiming 1300 cycle 10
year life with no DOD mentioned.....<br>
Its like shopping for tires or a mattress, you never know
what to believe, other than real experience sometimes. I had
a horrible time for instance finding cycle data for Deka,
and I'm still not sure if what they sent is right (that Deka
= Trojan) I had conflicting charts and numbers from Trojan
too.....<br>
Be nice to have an independent test facility and publish
some trust worthy comparison data on a level playing field.
I based my Rolls info on almost a decade of literature
collected from them, not just that one chart.<br>
<br>
Awaiting clarification from Rolls, sorry if I used the wrong
data<br>
<br>
Ray Walters</div>
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