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.
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 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.