Someone explain fast charging

[anastbogia1]

I recently got a samsung galaxy a5 2017 that has a usb type-c port to charge, and supports samsungs "fast charging".
Checking the power brick it states:5.0V - 2.0A (10w)
Can i get another fast charger with more than 10w listed to get better charging speeds?
The only thing i can get from my phone specs is "fast charging support"

 

[D JAY Cva]

that wont make any difference .. the original one comes with the max fast charging speed.. you can buy adapter with more Amp , which usually comes with more than one USB port to support multi device fast charging ...

 

[alokintl1]

Use original charger for fast charging.