Stupid lab tricks
This is great, but when you charge a Li-ion battery at faster than 1C, it roasts that puppy, and battery life goes straight into the trash.
> To preserve battery health, charging speeds typically decelerate as a device reaches full capacity
Not true. Charging speeds typically decelerate because the Battery Management System stops charging cells with higher voltages to let lower charged cells catch up and level out mismatches.
To preserve battery health, you simply don't charge faster than 1C, especially when the battery is hot.