That should be barely enough to power a smartphone. So the use cases mentioned in the articles are complete bullshit: even an electric bike would need at least 100 kg in battery. Electric cars? Just forget it…
This approach is only something for low-power scenarios where you cannot change the battery. And in fact, similar power sources have been used for space probes.
Never mind that the cost calculation is also bogus: nuclear waste will only be free as long as it is useless.
Ouch, typo in the image – 1.81 * 10^19, not 1.81 * 10^20. Also, it's 2.9 J/s, not 29. The end result is correct, I forgot to correct a mistake for intermediate steps. ☹️
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