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A comment on Over 16,000 people still use a Pebble smartwatch. Parent comment

Re:Over 16,000 people still use a Pebble smartwatch by jackmott42 on Thursday November 03, 2022 @02:58PM (#33455718)
I believe the research would suggest 80% doesn't really make an especially good target. Its mostly a linear relationship between state of charge and speed of battery aging, other than a step change around 50-70% depending on the chemistry.

source (one of many): https://iopscience.iop.org/article/10.1149/2.0411609jes/pdf

I keep my EV charged to just 50% most days for this reason, get below that step change.

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Re:Over 16,000 people still use a Pebble smartwatch by gnramires on Thursday November 03, 2022 @03:43PM (#33456388)
Interesting, just a note to someone reading that paper: I'm not sure what methodology they used (did they keep the cell SoC in storage?), but storing depleted cells can severely degrade them due to self-discharge (that's why the recommended storage SoC is usually 40%).
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