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A comment on World’s largest battery maker announces major breakthrough in energy density. Parent comment

Re:World’s largest battery maker announces major breakthroug... by the_duke on Friday April 21, 2023 @11:24AM (#35655152)
You need to account for all the weight required to turn the radiation into electricity.

That'll make the numbers ... a bit different.

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Re:World’s largest battery maker announces major breakthroug... by mrtesthah on Friday April 21, 2023 @02:01PM (#35657625)
Not necessarily:

https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_ge...

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Re:World’s largest battery maker announces major breakthroug... by philipkglass on Friday April 21, 2023 @03:37PM (#35658907)
The GPHS RTG contains 7.8 kilograms of plutonium 238 but masses 57 kg in total. It also generates only 300 watts from that 57 kg package:

https://en.wikipedia.org/wiki/GPHS-RTG

You'd need about 3 metric tons of them to power one Model 3 cruising at highway speed (assuming ~16 kilowatts continuous power draw).

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Re:World’s largest battery maker announces major breakthroug... by stephen_g on Friday April 21, 2023 @04:03PM (#35659245)
Not to mention that you have to mine and refine a couple of tonnes of ore for every kilogram of refined uranium.
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