[RE-wrenches] Sealed Batteries

[Wind-sun.com]

Of all the AGM batteries that we have sold in the past, the only ones we would recommend for critical applications are the Concorde PVX series. Been selling them for over 10 years and have never had a single warranty claim.

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Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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  ----- Original Message ----- 
  From: tom jacoby 
  To: re-wrenches at lists.re-wrenches.org 
  Sent: Friday, October 16, 2009 9:47 AM
  Subject: Re: [RE-wrenches] Sealed Batteries


  Hey Daryl,
  We plan/design for 30% DOD, to be recharged by the PV on a daily basis, with limited generator run time (as needed). We understand the benefits of flooded batteries, but don't always have the option due to the remote nature of several of our projects, and are thus seeking the best sealed batteries.


  Thanks again,
  Tommy


  > Date: Thu, 15 Oct 2009 17:59:49 -0700
  > From: daryl_solar at yahoo.com
  > To: re-wrenches at lists.re-wrenches.org
  > Subject: Re: [RE-wrenches] Sealed Batteries
  > 
  > hi tom
  > give us some information on the charge/discharge cycle the batteries will experiance. 
  > 
  > For long life i like flooded batteries, and you can access the electrolite to determine SOC i like AGM over gel, but have little experiance with either. my experiance is the agm last longer than gel, and nither will last as long as flooded. i have 10 year flooded, and they are still working, and I CAN NOT remember sealed over 3 years ( AGM)
  > Darryl, 
  > 
  > --- On Thu, 10/15/09, tom jacoby <jacoby_tom at hotmail.com> wrote:
  > 
  > > From: tom jacoby <jacoby_tom at hotmail.com>
  > > Subject: [RE-wrenches] Sealed Batteries
  > > To: re-wrenches at lists.re-wrenches.org
  > > Date: Thursday, October 15, 2009, 5:26 PM
  > > 
  > > 
  > > 
  > > 
  > > 
  > > Hello,
  > > SELF is considering new battery options for our off-grid
  > > projects (primarily health centers in Africa at this
  > > time). For the purpose of this post, assume an average
  > > 48V 500Ah battery bank. We prefer sealed batteries
  > > because maintenance/watering is not always available. 
  > > 
  > > Does anyone have any data or experience for with the
  > > following batteries? (To date we have been using the
  > > Deka MKs). Any real-world data you have on cycle life
  > > vs. depth of discharge would be great.
  > > 
  > > 1. Universal Power Group (UPG) AGMs (i.e. UB 8D)
  > > 
  > > 2. Power Battery PSG/AG product line (i.e. PSG-12255FT)
  > > 
  > > 3. Lifeline (i.e. 8D or L16)4. Surrette AGMs
  > > 
  > > I am welcome to other suggestions as well.
  > > 
  > > 
  > > Thanks in advance,
  > > 
  > > Tommy Jacoby
  > > 
  > > 
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