USB Tester. Digital Power Meter Multimeter Ammeter Voltmeter. Monitor for Current Voltage and Capacity Speed Test of Chargers Cables and Power Bank 3-30V/0-5.1A QC3.0

Multifunctional: With the COOWOO intelligent digital USB meter, you can check the voltage, current, capacity, power, electrical energy, charging time, etc. The 0.96" LCD display allows easy monitoring of the charging voltage and charging current of your digital USB device while ensuring optimal charging speed. The current and voltage are displayed in real time at the same time.

Protection device: built-in electronic switching element ensures the detection of safety. The output automatically shuts off to protect your equipment from damage. It stores the data in case of sudden power failure. The voltage should not exceed 30 V and the current should not exceed 5.1 A.

Test function: the USB port is used to sync data and charge the battery. It has a built-in circuit with a CW3002D chip to accelerate fast charging. It is compatible with the high voltage test QC 2.0/3.0. It tests the capacity and electrical energy of the power bank, the maximum output current of the charger and the charging speed and quality of the data cable and charging cable.

Current calibration, voltage calibration, high voltage protection threshold, low voltage protection threshold, over-current protection threshold and capacitance compensation factor. Press the button cyclically to display it.