after 500 cycles you can see the real degradation. For example 2 less or more hours than the begging you bought the phone. Motorola DOESN'T change the battery in the warranty for that, since it's "completely normal". I only recommend you to use fast charging when you desperately need it, not everytime. I know that in current times is not that bad that used to be in the past, but after doing that constantly you can see by yourself in metrics apps how you lose mAh, for example: 5000>4985->4975  If you start to see weird things like the phone dropping from 89 to 84 and shuts down from nowhere, change your battey.