VivekBhagat you are wrong and data sheet of this charger says the same. Btw, if charger is PPS enabled (so it’s capable of continuous voltage/current change instead of regular negotiating), on specs you will find also variable voltage (eg. 3.3V-21V). As you can see, this charger is classic PD 3.0 charger, with negotiation of 5V/9V/11V/15V/20V. Seems, that you are not fully involved in this topic and just trying to argue on basis of your limited knowledge and experience, so I’m ending this discussion with hint : get a quality chargers and cables.