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			<title>Green Building Forum - Batteries</title>
			<lastBuildDate>Sun, 10 May 2026 09:26:35 +0100</lastBuildDate>
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		<title>Batteries</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18430&amp;Focus=310599#Comment_310599</link>
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		<pubDate>Fri, 08 May 2026 17:57:27 +0100</pubDate>
		<author>djh</author>
		<description>
			<![CDATA[What's the state of play with batteries these days?<br /><br />I am generally aware of the 'big' batteries supplied by the likes of Tesla, Fox ESS etc<br /><br />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 <img src="/newforum/extensions/Vanillacons/smilies/standard/cry.gif" alt=":cry:" title=":cry:" /> So ...<br /><br />(1) are they actually legal and what regulations apply?<br />(2) does anybody know which ones are good and which ones to avoid?<br />(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?<br />(4) how are they controlled - which require cloud or other external connections and which can be controlled locally somehow?<br /><br />I'm sure I'll think of some more questions, but that'll do for now! <img src="/newforum/extensions/Vanillacons/smilies/standard/bigsmile.gif" alt=":bigsmile:" title=":bigsmile:" />]]>
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		<title>Batteries</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18430&amp;Focus=310600#Comment_310600</link>
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		<pubDate>Fri, 08 May 2026 18:27:31 +0100</pubDate>
		<author>fostertom</author>
		<description>
			<![CDATA[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.<br />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.]]>
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		<title>Batteries</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18430&amp;Focus=310605#Comment_310605</link>
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		<pubDate>Sat, 09 May 2026 09:20:23 +0100</pubDate>
		<author>djh</author>
		<description>
			<![CDATA[Same questions apply, Tom. Plus who is a good installer?]]>
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