Is the 20-80% rule true?

That 1 Guy

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Jul 26, 2016
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Is it true that charging a device from 20-80% (or just keeping it in between) will lengthen battery life, or is it not. I personally think it's true. It makes sense, but I want proof!

Thanks!
 

That 1 Guy

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Jul 26, 2016
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Thanks for the help guys!
Photonboy's article said something about Lenovos having a program to stop charging at a certain percentage.
Is there such a program for MacOS?
Is there a way to notify battery depletion before it reaches 10%?
 

nolimits76

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Jul 18, 2016
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I've never used the 80/20 rule for my MBP and had no real issues. The battery has weakened a little over 5+ years but is still very, very good (8+ hours working, more on standby).
 

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