[RE-wrenches] Trojan L-16 SG Readings- Did Something Change?

[John DeBoever]

Sequoya, Wrenches,

Thank you for your patience on this, as I had no easy Internet connection. Below are the clarifications requested.




ü  Trojan Premium L16RE-B datasheet can be found here: http://www.trojanbatteryre.com/PDF/datasheets/L16REB_TrojanRE_Data_Sheets.pdf



ü  Trojan Premium line ( http://www.trojanbatteryre.com/PDF/Premium_Trojan_ProductLineSheet.pdf   ) has indeed changed its specific gravity from nominal 1.260+-0.007 to nominal 1,280+-0.007 since March 2012 production.  This change was motivated to reduce the confusion in the field between Trojan Premium line S.G. values and Trojan Signature line S.G. values.  They are now identical.  Only Trojan IND line S.G. remain at 1.260 .


ü  During the beginning of the life of the battery, an optimized development process of the plates porosity will take place to maximize the surface access contact between the electrolyte and the lead sulfate crystal within Trojan proprietary exclusive paste formulation.  This optimum moisture of the active material at the beginning of the battery life is the continuation of an advanced factory-controlled 72-hour curing process and increase the electrical conductivity and improved discharge performance of the active material paste, resulting in Trojan's proven both sustained capacity and total overall ampere-hours,  resulting in more operating power. The variation can reflect approximately 7 points in the S.G.


ü  The date code can be found on the negative terminal and consist of one letter and one figure.  The figure for 2012 is "2". Any date code from and after "E2"  (i.e. Code date with letter E2, F2, G2,...)

will have a nominal S.G. of 1.280 . Prior that, the nominal S.G. was 1,260.

I hope that helps,

John



John F. DeBoever
Global Technical & Projects Director - Renewable Energy
Trojan Battery Company

12380 Clark Street
Santa Fe Springs, CA 90670
Tel: +1-562-236-3000 Ext. 3139
Cell: +1-845-514-7600 - NY office time zone: USA EST (GMT-5)
Skype: john.f.deboever
Fax: +1-562-236-3239
jdeboever at trojanbattery.com<mailto:jdeboever at trojanbattery.com>
www.trojanbattery.com<http://www.trojanbattery.com/>

From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Sequoya Cross
Sent: Thursday, August 30, 2012 3:08 PM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] Trojan L-16 SG Readings- Did Something Change?

We are wondering if anybody knows when the Trojan L-16RE-B batteries went from full SG readings of 1.265 (after an 18 month "plate forming" period) to 1.280 that they now state on the data sheet. We have been having customers use 1.250 as a full reading which would gradually increase over time to 1.265 and that might take/might not be seen for 18 months. Now we see that a "full reading" should be 1.280 and maybe still a "plate forming" period or maybe not? Does anyone know the date code that we can use with customers to see what they should be looking for (should have been somewhere between 2010 and 2012)? I have this question out to Trojan as well, but haven't received confirmation and wanted to know what data you all were seeing as well.

Thanks-

Sequoya Cross
1589 Rapid Lightning Creek Rd
Sandpoint, Idaho 83864
www.backwoodssolar.com<http://www.backwoodssolar.com/>
Phone(208)263-4290
Fax (888) 273-8279

We are an online and catalog business that caters to off-grid and grid-tie customers, with technicians that own and operate a variety of renewable energy systems using the products that we sell. We take great pride in getting to know our products so that we can recommend the best for our customers.






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