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MedicalButterscotch t1_iy89lj9 wrote

Reply to comment by KingArthas94 in Possible to keep the battery capacity "healthy" by charging it not more than 85 %? by SoWeVibinNow

This is factually incorrect.

Lithium ion batteries do not have memory. They degrade based on cycle count and operating temperature.

Discharging from 100% to 0% imparts as much wear as two-half cycles, for example 80% to 30% twice.

Charge your device freely, it will optimize the rest.

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Krugen7 t1_iy8gqlr wrote

Then why would Apple bother to write all that

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MedicalButterscotch t1_iy8hc73 wrote

They actually do

They mention operating temperature as a critical component as well as how their batteries are rated for 500 cycles before hitting 80% residual capacity. You can use optimized battery charging if you wish as it slightly reduces cycle count by holding the phone at 80% before finishing the charge to 100% instead of allowing for small partial discharges at 100% which count towards your cycle count.

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KingArthas94 t1_iy8aha8 wrote

What does memory have to do with it? Above 80% and under 20% the battery is more stressed, and you don’t want that.

Why the fuck do you think Samsung added a feature to cut charging the battery above 85%?

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MedicalButterscotch t1_iy8hg1a wrote

See my reply to the other commenter above. It's about cycle count and temperature, my friend. Not a battery getting "stressed" over 80%.

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KingArthas94 t1_iy8jtek wrote

Yeah and you need higher temperatures over 80%, so no charging above that. Again, if Samsung added a “don’t charge above that” there must be a reason. You’re not smarter than their engineers.

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MedicalButterscotch t1_iy8k3z7 wrote

Higher temperatures to charge over 80%? That's new to me. I'm not disagreeing that traditionally the advice to prevent charging to 100% was sound. But with modern software maximizing battery life, there is no longer a need. If anything any benefit is just negligible at this point.

Additionally iOS trickle charges when temps get too high and also after about 85%. Temps aren't an issue.

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T3Sh3 t1_iy8ykol wrote

That’s weird about needing higher temperatures to charge above 80%.

My charger is as cool as a cucumber around that point forward.

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