I bought the BlitzWolf BW-FWC7 wireless charger for my Galaxy S9. Unfortunately, it charges just like my old wireless charger without fast charging. Fast charging I have enabled, good quality cables (I tested with Ampere software: wired charging over 2000mA, wireless around 400-500mA), charger adapter Samsung 5V-2A 9V-1.67A. Maybe Samsung has a different standard for fast wireless charging? If I buy the S20 will it be the same problem and will I have to buy another wireless charger for fast charging?
I do not use that make of fast charger myself so I can't advise wether it shoukd work or not.
If it has the required specs and the cord is good and your using the original Fast Charging Brick then I can't see why it shouldn't work.
Personally I use original fast charging pads and stands from Samsung.
Perhaps Google Search for that make of fast charger to see if there are forums with other users.
I wish you all the best with this situation.
🌈 Stay Safe 🌈
Current Phone ~
Samsung Note 20 Ultra 5G SM-9820 _256Gb SnapDragon 865+
Samsung One Ui 2.5/ Android 10.