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Don't put a fast charger for overnight charge. It degrades the battery. I got my charger hooked up to my server's usb port and it's able to charge a 10000mha battery overnight at nearly 100% from low percents.
The article literally says fast charging degrades your battery faster
"Further, many phones are now programmed to shut off power once the battery is full, even if it remains plugged in."
Quoting the article they linked for you. Since you seem to have either missed this important bit or are being pedantic. Unless your phone is 10 years old, it won't.
Fast charging generates more heat, and heat degrades lithium batteries. That is the issue, not how long the phone is plugged in
Maybe not useful, but-
I use a setting on my phone that doesn't let it charge past 80%. It still charges at 78% tho.
Most modern phones also already do that and show 100% when they're at ~80% because they want to optimize battery life.
Minimize some e-waste, right? It's not like I'm ever that far from a USB c
When I plug my phone in at night, it slow chargers itself to 100% up until my first alarm.
Battery degradation is caused by extreme temperatures right? There is no way a fast charger will make your phone warm enough to cause any meaningful damage. (80% confidence)
Extreme temperatures AND high C (coulomb) rates. Not really a problem on most smart phones. But you'd have to charge from 0-100% in under 20 minutes (above 3 coulomb) for that to become a real problem
My one plus can charge 0 to 100 in about that time.
It does this by moving some of the charging circuit into the charger and having 2 cells in the battery.