Features: 1.Real Time Monitoring: Voltage, current and capacity are displayed on the same LCD screen, no cumbersome operation is required, just connect the USB interface, you can monitor the charging status of the phone in real time. 2.Supporting Protocols: It supports multiple protocols such as QC2.0 and QC3.0, supports screen rotation, and can read at any angle. 3.Power Off Save Function: Contains 9 groups of power off save functions, which temporarily store the current capacity and energy when the power is off. 4.Remove Manually: Reopen the opportunity to accumulate the currently used capacity and energy, if it does not need to accumulate, remove it manually. 5.Intelligent Memory Charging Capacity: Can save the mAH input of 9 groups of charging equipment after power off. Convenient to view and check whether the capacitance of the charging device is real. specification:Item Type: USB Tester Material: ABS Model: for KWS MX18 Current: 0 to 5.1A Voltage: 4 to 30V MAh: 0-999999mAh Milliwatt Hour: 0-999999mWh Timing: 0 to 99 Hours Power: 0 to 150W Charging Resistance: 0 to 999.9Ohms Grouping: 1 to 9 Groups Internal Temperature: 0 to 80 Positive Voltage: 0 to 10V Negative Voltage: 0 to 10V Charging Resistance: 0 to 999.9 Support Protocol: Support QC2.0 and QC3.0 PackageList:1 x USB Tester 1 x User Manual NoteU disk current detection, the working current of the U disk is between 50 and 100 mA, if it exceeds 100 mA, the U disk may be faulty. USB interface voltage detection, the external voltage of the USB interface on the computer is 5V5%, and the output current is relatively constant, generally 500mA, and the notebook computer is only 100mA.