[RE-wrenches] Battery Experience

Fri Jul 13 09:19:58 PDT 2012

"The more savvy customers I will recommend they turn off
 the PV's when they are there to get a deep discharge in."

um, why use up battery cycles unnecessarily like this?

todd

On Friday, July 13, 2012 7:28am, "Jason Lerner" <wapalco at rockisland.com> said:

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> Hello John,
> 
> This time of year I service off grid summer cabins where people come up once a
> year for a few weeks.  The batteries in these systems generally do not die from
> over cycling,  but from over/under watering,  acid stratification, corrosion,  and
> generally being ignored.  The more savvy customers I will recommend they turn off
> the PV's when they are there to get a deep discharge in.
> 
> Could you recommend any thing else they could do to lengthen their battery bank
> lifespan? These systems generally have a small PV charging capability,  and float
> charge 350 days a year. It seems ironic that these systems that really never get
> used,  and my battery bank at home that gets used (but not abused) and cycled
> daily, will last the same number of years.
> 
> Thanks very much,
> 
> Jason Lerner
> 
> Waldron Power and Light Co.
> 
> On Jul 9, 2012, at 12:53 PM, John DeBoever wrote:
> 
>> Jason, Wrenches,
>>
>> Thank you for your patience and positive statements on Trojan Battery Company.
>> Last week was a busy and I was away from my desk most of the time with limited
>> access to Internet.
>>
>> Both the Premium ”RE” versions L16RE-A and L16RE-B, and, the
>> Signature  L16P & L16H are great deep-cycles lead acid batteries for solar
>> applications. The key differences between them are:
>>
>> ü  The grid is thicker for the Premium “RE” L16RE-A and L16RE-B,
>> which effectively reinforces further the frame strength which results into a
>> greater corrosion resistance;
>> ü  There is relatively more electrolyte in contact with the plates in the
>> Premium “RE” L16RE-A and L16REB, which enhances the electrochemical
>> reaction, particularly during PSOC;
>> ü  The rubber-based multi-rib geometry separator is approx. 30% thicker for
>> the Premium “RE” L16RE-A and L16RE-B, which translates into a longer
>> life of the separator. The thicker multi-ribs geometry keeps over time the acid
>> channels open longer, promoting the flow of the electrolyte . As a result, the
>> thicker separator is reducing the risk of stratification and enhancing
>> electrochemical processing throughout the plates, resulting into longer
>> continuous performance of the battery.
>> ü  In the approx. same form factor (except the height), this results into
>> more lead per Ah capacity on the L16-RE units nameplate.
>>
>> As a consequence, the cycling performances of the Premium “RE” is
>> 1,600 cycles @ 50% DOD and 4,000 cycles @ 20% DOD. Respectively 1,200 cycles #
>> 50% DOD, and, 3,000 cycles @ 20% DOD @ 20% DOD, for the L16-P & L16-H.
>>
>> I hope this helps. Let me know if I can shed further light on other attributes of
>> lead acid batteries.
>>
>> Sunniest regards,
>>
>> 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
>> www.trojanbattery.com
>>
>>
>> From: re-wrenches-bounces at lists.re-wrenches.org
>> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jason Lerner
>> Sent: Sunday, July 01, 2012 11:26 PM
>> To: RE-wrenches
>> Subject: Re: [RE-wrenches] Battery Experience
>>
>> I am back to using Trojan's after 12 years of trying others,  none seem to last
>> as long for the L16's.  Could anybody explain the technical differences between
>> the Trojan L16 and the L16RE-B's.  I have read all the brochures but would like
>> to understand what is going on in there instead of getting the marketing of
>> DuraGrid™, MaxGuard® XL separator and Alpha Plus.
>>
>> Thanks very much,
>>
>> Jason Lerner
>>
>> Waldron Power and Light and Co.
>> On Jun 29, 2012, at 6:41 PM, Jonathan Hill wrote:
>>
>>
>> Over 20 years experience with them says you can't go wring with Trojan!
>> Jonathan Hill, senior system engineer and founder
>>
>> Sierra Solar Systems
>> 563C Idaho Maryland Road
>> Grass Valley, CA 95945
>> Celebrating our 32nd year in solar!
>> tech info and foreign orders:  (530) 273-6754
>> order line: (888) ON-SOLAR (US only)   FAX:  (530) 273-1760
>> e-mail:  <mailto:solarjon at sierrasolar.com>
>> world wide web:  <http://www.sierrasolar.com>
>>
>> Check out our 2 minute video at:
>> http://www.youtube.com/watch?v=WY-0UuabPEk
>>
>>
>>
>> On Jun 29, 2012, at 12:42 PM, Dave Palumbo wrote:
>>
>>
>> We have had less than stellar performance out of the Crown L-16’s that we
>> installed 4 to 5 years ago. Premature failure is my experience. About 60% of the
>> cycle life compared to Trojan L-16’s and also Surrette/Rolls. I’ve
>> been using those since 1985.
>>
>> Back to using Trojan. Specifically RE-B’s either L-16, or T-105. And have
>> used Trojan Industrial IND 13-6V on one system with good success with another set
>> ordered.
>>
>> Dave
>>
>> From: re-wrenches-bounces at lists.re-wrenches.org
>> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of SunHarvest
>> Sent: Friday, June 29, 2012 11:56 AM
>> To: RE-wrenches
>> Subject: Re: [RE-wrenches] Battery Experience
>>
>> Just got talked into buying Crown (395Ah at 20Hr) as my local rep, "the battery
>> expert", was persuasive in his testimony to their reliability. Should've
>> consulted wrenches first.
>>
>> Should I be worried??
>>
>> Eric Stikes
>> SunHarvest Solar
>> +1 (530) 798 - 3738
>> www.harvesthesun.com
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