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Coin-sized nuclear 3V battery with 50-year lifespan enters mass production
(www.techspot.com)
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this post was submitted on 04 Apr 2025
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https://www.ti.com/lit/gpn/LM555
2mA minimum, and that's just q current. It's gonna be much higher when you're actually using it for a clock.
I'm sure the casio's main power sink is the display. I bet the refresh rate could be reduced for better battery life.
Isnt the refresh rate just 1 Hz?
Yep.