I ordered and paid for Super Fast Charger, not Fast Charger. Charges quickly, but not as fast as an ultra-fast charger. I keep it to myself because it's too much of a hassle to return. I am disappointed because I expected something different from what I bought and paid for.

Super Fast Charger works well. I like having extra chargers in the office. I hate taking it out of the bedroom and moving it around because I forget where I put it so I always need extra chargers. They work just as well as OEM Samsung. The difference is only in the color. Great value for a super fast charger.

I have a new 21 Ultra which is super charging if you have the right adapter and cable. I used this and confirmed that the phone says "Super Charging". Remember that with this adapter you must also have a cable. I bought a USB to USC adapter and it didn't charge it. You must have a special cable. for your information

At first I was very happy with my purchase. I use my phone a lot for work, so I always have a charger in the car, at work, and at home. One of the chargers stopped working recently. I switched to another plugin and it still doesn't work. I made sure the switch didn't work and it didn't. I've had these chargers for less than a year I think. One charger is still working properly, so it must just be an accident.