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geocrasher
on June 4, 2024
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Show HN: I made a tiny camera with super long batt...
Or a different battery chemistry with a lower self discharge rate. No need to be rechargable in most of the use cases, I'd imagine.
imhoguy
on June 4, 2024
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Panasonic BR2032 has 30µA discharge rate
https://www.digikey.com/en/products/detail/panasonic-bsg/BR-...
foldr
on June 4, 2024
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If that's the self discharge rate then the battery would be fully discharged after less than a year on the shelf (given its 190mAh capacity). Coin cells typically have a much longer shelf life than that. I wonder what that figure is, exactly.
balou23
on June 4, 2024
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This sounds like a job for a lithium thionyl chloride battery.
The guys with the purple LiSoCl2 batteries make ones with up to 40 years of usable life
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