Should I buy a Samsung Adaptive Fast Charge charger?

Adaptive Fast Charging is fastcharging in samsungovsky. The maximum current power can reach 15 watts (9.00V? 1.67A). This technology is also compatible with Qualcomm Quick Charge 2.0 (well, not to the fullest, but only up to 9 volts).
Under the cutter is an external inspection of the adapter, current measurements in different operating modes, autopsy, and my free reasoning about this.
The configuration of the power supply in question is -OEM In the kit there is only a polyethylene cover that protects against scuffs. (PS! Looks like a chitinous insect carapace left after molting)

The power supply itself is structurally combined withelectric plug of the European standard. Its body is made of milky white plastic, and the front edge is decorated with silver lightning - a sign of belonging to fast charges and an inscription about it - Adaptive Fast Charging.

The only USB port for charging devices is located on the left side. (This can be seen in the photo above). The top line is succinctly occupied by the brand name - Samsung.

The right side is empty. And the back contains information about the model, input and output voltage and current, serial number, date and place of production.

Of course, the final consumer will be more interested in these two pairs of numbers from here:
output 9.0V? 1.67A or
5.0V? 2.0A
Next, we will try to find out how much this relates to reality.
For example, in the five-volt idle mode, there are no complaints to the adapter. In this case, the output voltage is even a little too high and is 5.11V.

When a 5-ohm wire resistor is connected as a load, the output voltage drops to 4.95V. The current strength is 0.89A

When two such resistors are connected in parallel, the voltage becomes even less and amounts to 4.84V. Yes, and the "lack" of amperes is becoming more apparent - only 1.75A, instead of the two declared.

Using the trigger, we translate the power supply into a nine-volt operation mode. At the same time, without load, the voltage is again slightly overestimated and amounts to 9.14V

When a load of 5 Ohms is connected, the output voltage becomes 8.82V at a current of 1.66A.

What can be said from the results of the measurements? Apparently, the power supply line at 5V is implemented more “crookedly” than that at 9V. Since the shortage of current power in the first case is more than 15% (8.6 watts instead of the 10 promised), and in the second less than 2.5% (14.64 watts instead of 15.03). One way or another, the considered power adapter has good consumer characteristics and normally does its job. Especially when charging devices with Samsung's Adaptive Fast Charging and / or Qualcomm Quick Charge 2.0 technology.
Regarding inside photographs and overall dimensions

Now goodbye. Be good!