Nice converter, works OK with 5v, 9v, and 12v modes. Heating during the conversion is acceptable. I checked it with a phone at 9volts mode, the current was up to 1,5 amps. It had been worked for 2 hours, and the temperature was near 60C. Be careful, the input voltage has to be more than 12volts.
1 capacitor was broken off and usb slot bent