this post was submitted on 12 Jan 2024
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Nuclear smartphone 3V battery lasting for 50 years (energymetalnews.com)
submitted 2 years ago by haxor@derp.foo to c/hackernews@derp.foo
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[–] Kerb@discuss.tchncs.de 3 points 2 years ago

sounds like a tiny rtg,
and according to the article it produces only about 100 microwatts (0.0001W)

for comparison, those calculators with tiny solar cells produce aparently about 0.02W - 0.35W