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New sodium ion battery stores twice the energy and desalinates seawater
(www.sciencedaily.com)
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this post was submitted on 25 Feb 2026
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I think the real breakthrough will come when we will be able to make powerful microbatteries.
I think there were some nuclear button ~~1W~~ 0.1mW ~~decade-long~~ 50-year batteries, from China if I recall
here: https://www.livescience.com/technology/engineering/betavolt-bv100-radioactive-battery-can-last-50-years-coming-in-2025