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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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Renewable Energy: Batteries

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      CommentAuthordjh
    • CommentTime1 day ago
     
    What's the state of play with batteries these days?

    I am generally aware of the 'big' batteries supplied by the likes of Tesla, Fox ESS etc

    There now also seem to be much smaller products aimed at the 'balcony solar' market and I don't know anywhere near as much about them :cry: So ...

    (1) are they actually legal and what regulations apply?
    (2) does anybody know which ones are good and which ones to avoid?
    (3) a lot are aimed at integrating with balcony solar, but I already have solar on my roof with microinverters, so I just want an AC connected battery. Does that change things?
    (4) how are they controlled - which require cloud or other external connections and which can be controlled locally somehow?

    I'm sure I'll think of some more questions, but that'll do for now! :bigsmile:
    •  
      CommentAuthorfostertom
    • CommentTime1 day ago edited
     
    On the SpeakEV forum, apparently it's not such a terminal problem, if an older (losing value) EV's battery loses too much capacity - good used ones from a crashed car are available on ebay, costs £1500 to install - and fitting a higher capacity later-model battery while you're at it.
    I'm saying this because the old one still has value, indeed the good ones are offered alternatively as a domestic battery. Deterioration doesn't matter so much for domestic - just add another one. There'll be a Youtube about it.
    •  
      CommentAuthordjh
    • CommentTime23 hours ago
     
    Same questions apply, Tom. Plus who is a good installer?

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