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Adaptive Charging (slow charging to extend battery life)

I read about Google Pixel phones supporting something called “Adaptive Charging”.
Google describes it as following:

To help preserve long-term battery life, you can charge your phone steadily overnight. Adaptive charging uses your alarm’s settings to completely charge your phone right before you wake up.
https://support.google.com/pixelphone/answer/7106961
 
So the phone will charge slower than normal, which will make the battery last longer.
Would be great if Fairphone could also offer such a feature to extend the battery life and improve the sustainability!
 

There’s also a small discussion about this and similar features in the /e/ Foundation forum.

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When the Fairphone 3 was introduced it was said that it would have some smart charging which would charge the phone slower for the last 10% from 90% to 100% to go easy on the battery and thus improve sustainability.

I’m not finding a current Fairphone source for this quickly now, though, and I don’t know whether that would be in the vendor software parts which get imported into /e/ or whether that would be a Fairphone OS exclusive feature, if it’s still there.

This is function of the Qualcomm Quick Charge 3. If you do not use a QC3 compatible charger and cable the phone with charge slowly.

This page is rather vague, as is FP3(+). Charge your phone – Support.
And Qualcomm seem to primarily like to talk about the quickness of their Quick Charge iterations on their website, as far as I’ve seen for now.