this post was submitted on 13 Feb 2026
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576
New nickel-iron battery charges in seconds, survives 12,000 cycles (interestingengineering.com)
submitted 2 weeks ago by throws_lemy@reddthat.com to c/technology@lemmy.world
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[–] Ilovethebomb@sh.itjust.works 55 points 2 weeks ago (8 children)

However, this technology does not yet match the energy density of lithium-ion batteries.

It would be good if you actually told us what that energy density is...

[–] InnerScientist@lemmy.world 16 points 2 weeks ago (1 children)

Technically, a copper wire is a battery that charges in (a very tiny fraction of ) seconds.

[–] Zink@programming.dev 4 points 2 weeks ago

ahkshuallly, don't you mean a capacitor?

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