This derating is actually really easy to implement: a standard lithium ion cell ... | Hacker News

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		kccqzy 4 months ago \| parent \| context \| favorite \| on: Battery charge limiter for Apple Silicon MacBook d... This derating is actually really easy to implement: a standard lithium ion cell is actually fully charged at 4.2V, but the battery management system will report it as fully charged once it reaches 4.15V or so.

userbinator 4 months ago [–]

For aerospace they only go up to 4.05V, and the cells last tens of thousands of cycles with less than 10% capacity loss after a decade:

https://www.nasa.gov/wp-content/uploads/2024/01/saft-ves16-c...

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