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A new liquid battery stores solar heat for weeks
(www.anthropocenemagazine.org)
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this post was submitted on 23 Apr 2026
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Comparing heat energy and electrical energy (heated water vs lithium-ion battery) tells you quite a lot of science in this news article. They are not the same, even tho both are joules or watt-hours. Joule also makes things sound huge, because you get to add the mega on the prefix.