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Healthiest way to charge Lithium Ion (lemmy.world)
submitted 2 months ago by root@lemmy.world to c/technology@lemmy.world
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When charging a phone wirelessly, there is sometimes significant heat generated. That combined with higher charging rates that are now coming out with the Qi 2 standard make me wonder what the ideal charge for the battery would be.

Most of the time I just toss my phone onto a wireless charger before bed, and don’t really care how quickly it charges. Would it be better to use a 5W brick with a charging pad? Should wireless be avoided and usb used instead?

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[-] NeoNachtwaechter@lemmy.world 36 points 2 months ago

The very healthiest way? But maybe you won't like it :)

Don't charge above 80%, don't discharge below 20%, charging current at 1/10 of the capacity, and always keep the thing at average room temperature.

[-] wesker@lemmy.sdf.org 13 points 2 months ago* (last edited 2 months ago)

Don't charge above 80%, don't discharge below 20%

This how I keep my phones healthy for 4-5 years at a time. I only this year upgraded my Pixel 4a 5G to a 7a, and only because Graphene EOLd the 4a.

[-] Vinny_93@lemmy.world 3 points 2 months ago

My A52s has a built-in function to not let it charge above 80. I keep it on unless I need the extra 20% for instance when I'm away for a while.

[-] JustEnoughDucks@feddit.nl 1 points 2 months ago

Really? My girlfriend's A52 doesn't have this feature. That is part of why I bought my Xperia 5ii. Is it a new feature?

(After 3 years the battery is at 70% on mine because apparently Sony uses shitty as hell batteries and software drain glitches, while my girlfriend's A52 always charging to 100% lasts a day and a half with 3x the use, would not recommend)

[-] Vinny_93@lemmy.world 1 points 2 months ago

Maybe it's only in the A52s, not the A52.

[-] IllNess@infosec.pub 1 points 2 months ago

Samsung Galaxy S24 has this too.

[-] root@lemmy.world 2 points 2 months ago

I was actually thinking of using the battery charge limit feature to prevent charging above 90%. Not sure I could do 80 without an charge during the day, lol

[-] xep@fedia.io 7 points 2 months ago

Pragmatically speaking, for battery health you should charge only as much as you need the battery, so it sounds to me that in your case that's 90%. Also, here's a paper about battery charging:

Strategies to limit degradation and maximize Li-ion battery service lifetime - critical review and guidance for stakeholders https://deepblue.lib.umich.edu/bitstream/handle/2027.42/154859/Woody_Maxwell_Thesis.pdf

this post was submitted on 25 Oct 2024
46 points (97.9% liked)

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