Also consider the large industrial batteries such as the Trojan Industrial 2 v models, HUPs, IBE, etc. They have longer cycle life, and therefore are a better deal in the long run. Batteries are the weak link in off grid systems, so you want to really make sure you're getting the right battery, and the right size as well.
AGMs are great for GT, but not cost effective for larger off grid systems.
Also reread previous threads on batteries, not everyone has been happy with the choices you list.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 1/18/2014 5:20 PM, Chris Mason wrote:
This is for an off-grid system.


On Sat, Jan 18, 2014 at 8:07 PM, Jerry Shafer <jerrysgarag...@gmail.com <mailto:jerrysgarag...@gmail.com>> wrote:

    For for grid tie system l I would only use AGM weather it be
    interstate or rolls and amps per buck is better over time
    Jerry

    On Jan 18, 2014 3:16 PM, "Chris Mason"
    <cometenergysyst...@gmail.com
    <mailto:cometenergysyst...@gmail.com>> wrote:

        We don't do a lot of off-grid systems so I am short on
        experience with battery systems. I have a 8KW Radian system
        for which I am considering Rolls Surrette or Outback 200RE AGM
        batteries. I know people like the Surrettes, what is the
        experience with the outback battery system?

-- Chris Mason


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--
Chris Mason
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www.cometenergysystems.com <http://www.cometenergysystems.com>
Cell: 264.235.5670
Skype: netconcepts


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