Review on Fast Charging Block Quick Charge 3.0 Compatible with Samsung Galaxy S21 S20 A11 A71 A51 A20 A21 A01 S10e A10e A70 Note 20, Moto G Power G Stylus G Fast G7 G8 Plus Play Z5 Z4 Z3 X4, Type C Cable Wall Charger by Melody Watson

There is nothing to say here that is not already mentioned in the title of the test. One of them charges my S21 Ultra fast and the other charges it slowly. I wouldn't call it a deal breaker because it charges, but obviously we buy them for fast charging. I can get slow charging to work for a working charger, but obviously charging just one of them at full speed isn't ideal, so I'm giving it 3 stars in anticipation of durability. I'll update again if anyone comes out to let you know if it's taking a reasonable amount of time.