[RE-wrenches] Interstate L-16 vs Trojan L-16REB

[Jason Lerner]

Hello John,

Thanks for your response.  Often L16's need to be used over T-105's at a certain price point to get more amp hour capacity with less parallel strings.  That said, we have found that a properly sized battery bank with T-105's will typically last longer than a properly sized battery bank of L16's.  

Could you comment on the build differences between the L16 and T-105 that might illustrate why this is?

Jason Lerner
Waldron Power and Light Co.


On Feb 16, 2012, at 11:48 AM, John DeBoever wrote:

> Jason,
>  
> Deep-Cycle require thick plate. Higher current require plate surface. In a same format case, for the same weight,  you can either have few thick plates or a higher number of thinner plates. Trojan true deep cycle flooded batteries feature thicker plates and a resulting lower capacity than an standard non-deep cycling battery in the same battery case form factor and total lead weight . A deep cycle “L16” offers a larger case, thus a larger surface per plate, thus a larger Ah capacity. Attention is paid to have good flow of the electrolyte and a decent mud well in the L16 case. Adequate equalization charge is meant to equalize the cells and reduce stratification of the acid in the electrolyte.
>  
> Of the other factors that influence deep cycle performances of Trojan antimony flooded lead acid battery:
> ü  A Trojan exclusive paste (active material) formulation,  made up of Alpha and Beta lead crystals. Alpha crystals provide mechanical strength to the paste and is the better electrical conductor of electrons. Beta crystals provides better discharge capacity and are relatively easier to form than Alpha crystals.
> ü  The addition of a T2 metal agent helps achieve an optimal balance between Alpha and Beta lead crystals which results in a more uniform structure and enhanced electrical conductivity. The refined structure allows a porosity development in the plate that achieves a higher sustained discharge capacity with cycling and therefore a higher total accumulated amp-hours during the life of the Trojan battery.
> ü  Advanced design, multi-rib, rubber-based separator material formulation inhibits antimony transfer between positive grids to the negative plates, as well help with electrolyte flow.
>  
> John
>  
> John F. DeBoever
> Global Technical 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
> www.trojanbattery.com
>  
>  
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jason Lerner
> Sent: Thursday, February 16, 2012 1:56 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Interstate L-16 vs Trojan L-16REB
>  
> Hello Ray and all,
>  
> Why is it that golf cart batteries tend to last longer than L-16's in the same application,  small off grid systems?  Is the plate thickness or electrolyte vs plate surface area ratio different?  Or is it that the extra height of the L16 contributes to more electrolyte stratification?  Or??
>  
> Thanks,
>  
> Jason Lerner
>  
> Waldron Power and Light Co.
>  
>  
> On Feb 14, 2012, at 9:02 PM, Ray Walters wrote:
>  
> > No, both golf cart batteries and industrial cells get more cycle life per $.
> >
> > Ray
> >
> > On 2/14/2012 1:18 PM, William Miller wrote:
> >> Colleagues:
> >>
> >> Do any of you have experience with Interstate L-16 batteries?  Are they a good value?
> >>
> >> Thanks in advance,
> >>
> >> William Miller
> >>
> >
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