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Domestic scale flow batteries

 
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Pepperman



Joined: 10 Oct 2010
Posts: 759

PostPosted: Thu Apr 06, 2017 1:38 pm    Post subject: Domestic scale flow batteries Reply with quote

An interesting Fully Charged this week:

https://www.youtube.com/watch?time_continue=550&v=4OHstY_kKUY

Love the look of those flow batteries.
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Pepperman



Joined: 10 Oct 2010
Posts: 759

PostPosted: Thu Apr 06, 2017 1:45 pm    Post subject: Reply with quote

Specs: http://redflow.com/products/redflow-zbm-2/

ETA: https://www.zcell.com/
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emordnilap



Joined: 05 Sep 2007
Posts: 13970
Location: Houǝsʇlʎ' ᴉʇ,s ɹǝɐllʎ uoʇ ʍoɹʇɥ ʇɥǝ ǝɟɟoɹʇ' pou,ʇ ǝʌǝu qoʇɥǝɹ˙

PostPosted: Fri Apr 07, 2017 11:12 am    Post subject: Reply with quote

Looks cool.
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Pepperman



Joined: 10 Oct 2010
Posts: 759

PostPosted: Sat Apr 08, 2017 11:03 am    Post subject: Reply with quote

Yeah it does. I like the idea of a battery which benefits from periodic complete discharge.
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clv101
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Joined: 24 Nov 2005
Posts: 7632

PostPosted: Sat Apr 08, 2017 9:20 pm    Post subject: Reply with quote

Pepperman wrote:
Specs: http://redflow.com/products/redflow-zbm-2/

ETA: https://www.zcell.com/


Interesting, I'm in the market for a ~10kWh, 48V DC battery. Currently looking at eight 6V 468Ah VRLA. Eight of these give a 50% discharge of just over 10kWh.
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adam2
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Joined: 02 Jul 2007
Posts: 6209
Location: North Somerset

PostPosted: Sun Apr 09, 2017 11:06 am    Post subject: Reply with quote

This is a most interesting development and shows IMO considerable promise.

Not yet suitable for domestic off grid use though for a number of reasons.

Firstly it consumes an average of 180 watts for auxiliary components, self testing and so on. An off grid home would need considerable extra PV capacity to supply this in mid winter.

Secondly, it performs a full discharge for test and maintenance purposes this wastes the energy used to charge the battery and also means that no electricity is available until it has charged which might take a day or more.

The availability of a mains supply seems to be presumed.

Finally it is in my opinion simply too complicated, much too reliant on sophisticated electronics that are not user repairable.

Certainly worth keeping an eye on this developing technology.
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