alt Hacker NewsOne thing I was hoping the article would explain is how fast charging actually works: IE, how does the charge controller turn incoming electricity into a full battery?
The reason why I switched to wireless charging was because I had a phone go bad due to problems with the charge port. USB-c ports on my Pixels to tend to clog with dust and other debris, but as long as I use a wireless charger, it doesn't matter.
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Saris • today at 1:38 AM
It's basically as simple as a buck converter that reduces the incoming voltage.
Phone batteries need either 4.2V or 4.35V to charge fully, so whatever voltage comes in (5-20V typically) at whatever current, gets reduced down to the correct voltage and current to charge the battery.
All charging does is reverse the flow of lithium ions through the electrolyte that happens when the battery discharges.
Wireless charging is usually worse long term because of the extra heat the coils create from the waste energy. It's probably about as bad as the really fast charging phones do now though. I principally have mine do a slow charge over night these days though as is mostly last through the day.