[RE-wrenches] Sealed Batteries

[Darryl Thayer]

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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