At present, there is no brand of PD fast charging that can do no damage to the battery. It is a lie to say that some of them can only do a comparison between the large and the small damage.

The thermal effect of fast charging batteries, due to the high current of the battery, will generate high temperature, which will affect the stability of the battery, resulting in the phenomenon of battery capacity reduction and cell damage, which shortens the battery life. The damage to the battery basically comes from the release and absorption of ions (shrinking and expanding) when the battery is discharged, and fast charging can destroy the chemicals in the electromagnetic, resulting in a shortened battery life.

Although fast charging can damage the battery, there are also ordinary chargers, but the pros/cons ratio of fast charging is completely acceptable.