[RE-wrenches] Outback 200 RE

[Tom Duffy]

Allan

Sure I agree that picking a battery out of a hat is not system design... I just don't have time to type that much. Hence my musing about the small amount of autonomy from 200AH @ 48Volt.

Kind regards

Tom Duffy
Senior Solar Design Engineer
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From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan Sindelar
Sent: Sunday, January 19, 2014 8:22 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Outback 200 RE

Tom,
I may be mistaken, but if I understood you correctly you have missed something. The Radian is available only in 48v, so four 12V 200 Ah batteries is eight kilowatt-hours of storage to 80% maximum DoD. Yes, it's small (my off grid home has 26 kW) but one or two strings may be adequate, depending on the customer's application and needs.
Allan
Allan Sindelar
Allan at positiveenergysolar.com<mailto:Allan at positiveenergysolar.com>
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On 1/19/2014 6:12 PM, Tom Duffy wrote:
Hi Chris

For an off grid system a 200AH 12 volt battery is rather small without resorting to parallel strings.

Three strings is only 600AH which is still on the small side, so one might ask why the 8K inverter?

The OutBack cabinet is fine for a back-up grid-tied system, not really a full off grid house

Without starting a big discussion, I would stick to a single series string sized to the load for three days autonomy.

200AH is usually a rather small weekend cabin and 600AH would be a smaller medium sized house.

Kind regards

Tom Duffy
Senior Solar Design Engineer
[Real-logo-X-195]
E-Mail: tom at thesolar.biz<mailto:tom at thesolar.biz>
Panama Office: 507-6126-1253
Direct Toll Free:888-503-6772
International: 575-539-2111
SKYPE Address: thesolarbiz
Although no trees were killed in the sending of this message, a large number of electrons were terribly inconvenienced.
 Confidentiality Notice: This message including any attachments is for the sole use of the intended recipient and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender and delete any copies of this message.


From: re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Chris Mason
Sent: Saturday, January 18, 2014 6:16 PM
To: RE-wrenches
Subject: [RE-wrenches] Outback 200 RE

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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