Coin sized battery can last 50 years without recharge – coming in 2025
livescience.com
livescience.com
I’m curious how long other comparable batteries would last if you were only drawing 100 microwatts from them. I’m curious what you could run on that little power.
But I guess something a bit larger could probably be batteries in a smoke alarm, or other home security sensors? Idk how much power those draw but if it’s just making a WiFi ping sporadically it probably isnt much.
The article claims they have about 10 times the energy density of Li-Ion batteries. So assuming their numbers are correct, maybe 5 years.
Purely in terms of energy density, these are cool but they're quite a long way from "phone that never needs to be charged" territory. Maybe a phone would need to be charged every few weeks instead of every couple days...except these can't be recharged at all.
On the other hand, I don't know how strong are the layers that aborb the radiation and cretes the electricity.
Lipos -> 3.7V nominal once you're in the meat of it. 100uW -> 27uA @3.7V, which is a __VERY__ generous current budget with modern microcontrollers and effective use of sleep modes.
AAA Cells -> 1200mAH @27uA -> 5rs
AA Cells -> 2200mAH @27uA -> 9.3yrs
C Cells -> 9000mAH @27uA -> 38yrs
Then just remember that this thing is smaller than all of those, has no self discharge which typically steals 2-3% of the battery capacity year-over-year, and that with lipo's you can't use the last chunk of nameplate capacity due to precipitous voltage drop at the end of the discharge curve.
"If approved for use in devices like smartphones, future generations of the battery would ultimately remove the need to ever charge them, company representatives said."
The battery is around a cube centimetre , a microampere is 1 / 1'000'000 of Ampere (A), a smartphone needs between 2 and 3.5 Ah , even a single LED needs milliamperes ( 1 / 1000 of A), you can do the math. Still this crap is reposted again, again and again. At this point I'm sure, it is part of a campaign to deceive investors. Two companies tried to collect funds for this kind of batteries, one simply disappeared, the other is under investigation for fraud:
https://www.youtube.com/watch?v=5M5MF6KE-jY
Anyway, what is the point of a 50 years battery to put inside devices people throw away after 4-5 years, top ? To produce more nuclear wastes in a world where people can't build nuclear dump sites ? It's hilarious if you think about it: apparently the same people that are against nuclear power plants, a technology able to save the planet reducing the fossil fuels consumption, find acceptable to put a nuclear source near their crouch to avoid phone recharges.
The only thing these two groups of people have in common is that you don't like them. I fail to see any correlation here whatsoever.
Each year it's a different technology. A time ago it was radioactive Carbon, this is radioactive Nickel, and I have the feeling I forgot another variant posted a few years ago... But for some misterious reason, all of then promise "100 microwatts".
What is the boundary for something to be called a plate of diamond vs a plate of carbon?
neither new nor useful
More marketing bullshit form a company known for doing this.