[RE-wrenches] battery cycle life, US Battery

[Larry Crutcher, Starlight Solar]

Ray, 
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.

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.

Larry

From: Ray Walters 
Sent: Saturday, September 17, 2011 1:38 PM
To: Allan at positiveenergysolar.com ; RE-wrenches 
Subject: Re: [RE-wrenches] battery cycle life, US Battery

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.....
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.....
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.....
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.

Awaiting clarification from Rolls, sorry if I used the wrong data

Ray Walters
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110917/87644480/attachment-0003.html>