Nuclear smartphone 3V battery lasting for 50 years • Hacker News Board

Re: Nuclear smartphone 3V battery lasting for 50 years

#41

Post by yoav » Sat, Jan 13, 2024, 1:07 AM UTC

ale42 wrote: post #23

dalore wrote: post #19

Earlier quoted context omitted.

Lots of things are radioactive. A banana for example.

You don't get a dangerous dose of radiation from a banana if you open it. Not sure about their battery...

You don’t open a battery while it’s in your pocket. Not sure about their banana…

Re: Nuclear smartphone 3V battery lasting for 50 years

#42

Post by z_ack » Sat, Jan 13, 2024, 11:14 PM UTC

Fake news: battery producing electricity using beta decay aren't a new technology, are arounds for decades, those devices produce electricity in order of micro ampere/h, 1 / 1'000'000 of ampere, currents, so small can only fit to niche application, like preserve the status of few bytes of RAM. A phone needs million of time that current not only to operate but even to have a detectable recharge level increase. So article stating they can power or recharge phones and drones are pseudo-science and fake news, I'm reporting this because I observed a proliferation of articles with the same topic, this "50 years miracle battery", without reference, scientific documentation, tests, any paper with scientific value :

https://news.ycombinator.com/item?id=38966352 https://news.ycombinator.com/item?id=38978085 https://news.ycombinator.com/item?id=38970438 https://news.ycombinator.com/item?id=38980963 https://news.ycombinator.com/item?id=38943144 https://news.ycombinator.com/item?id=38951104

maybe they are a scheme to deceive potential investors.

Re: Nuclear smartphone 3V battery lasting for 50 years

#43

Post by Ballas » Sun, Jan 14, 2024, 6:42 AM UTC

jauntywundrkind wrote: post #39

Ballas wrote: post #9

What's with the title, the current battery produces 100 microwatts, and there is no "smartphone" in the title. And I assume the "63 nuclear isotopes" mentioned in the article refers to nickel-63, not actually only 63 isotopes...

100mW probably enough to idle a sizable % of phones on. One could definitely make a low powered phone that slowly recharges a super capacitor or regular battery while idling. Basically use the nuclear battery like a range-extender in a hybrid car, dumping power in, but not driving the phone.

100mW is probably enough indeed, but the battery in the source only does 100uW.