XA1 RELIFE Current and Voltage Multifunction Tester For Mobile Phone Data Cable Charger Support Fast Charging Protocol. 1. Support the market's common fast charging protocols, and support QC2.0, QC3.0, SCP, AP2.4A and DCP fast charging identification detection. 2. Cover the identification and detection of the market's common charging protocols, support PD, QC2.0, QC3.0, SCP, AP2.4A and DCP fast charging identification and detection through the market's common fast charging protocols. 3. Using a special measurement chip, it can achieve both forward and reverse current sampling and measurement, and can be plugged in reverse. The C port can be plugged into a charger or a mobile phone. 4. Support one-click display interface flip, and the interface direction can be changed at will, making it easy to deal with a variety of positive and negative connection scenarios. 5. The screen display can be turned off to avoid light pollution when used at night.