You can enable fast charge by using a Qualcomm 2.0 or 3.0 adapter. Or any USB adapter that supports 9V2A output.
Here is a list from Amazon providing such adapters.
https://www.amazon.com/s/ref=nb_sb_ss_i_3_9?url=search-alias%3Daps&field-keywords=qualcomm+quick+charge+3.0+wall+charger&sprefix=qualcomm+%2Caps%2C526&crid=9UMH7S6UNDC4&rh=i%3Aaps%2Ck%3Aqualcomm+quick+charge+3.0+wall+charger