White Tail LCD Backlit LCD Digital Display USB Ammeter Voltmeter Load Capacity Detection Table Detector

Voltage and Current Measurement: Connect the male USB plug to a 5V charger, and insert the female connector into the mobile phone or other device. The voltage and current parameters are then read directly.

Measure MicroUSB Cable Quality: Connect the mobile phone or other device. First, connect the 5V charger with the male plug to the charger to record the voltage. Then, insert the MicroUSB cable from the 5V charger into the device's MicroUSB port to record the voltage. The smaller the voltage difference, the higher the quality of the MicroUSB cable.

Measure Power Supply Output Capacity and Efficiency: First, connect the power supply to the mobile phone. Turn on the power supply and press and hold the power button until the capacity reading returns to zero. Insert the phone several times until the power supply automatically turns off.

The displayed capacity corresponds to the mAh of the mobile power output when the unit is next powered on. Note that this mAh is...

Data change: Click the button to move to the next data set, then double-click the button to move to the previous data set.

Clear data: Press and hold the button for more than 3 seconds to clear the data from the group.