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

Voltage and current measurement: The male USB plug is connected to a 5V charger, the female connector is inserted into the mobile phone and other devices, and the voltage and current parameters are read directly.

Measuring MicroUSB cable quality: Connect the mobile phone and other devices, first connect the 5V charger with the male plug, note the voltage, then insert the MicroUSB cable from the 5V charger into the MicroUSB port of the device to note the voltage.

The smaller the voltage difference, the higher the quality of the MicroUSB cable.

Measure the output capacity and efficiency of the power bank: First, connect the power bank to the mobile phone, turn on the power bank, press and hold the button until the capacity reading returns to zero, then insert the phone several times until the power bank automatically turns off. The displayed capacity corresponds to the mAh output of the power bank when the unit is next powered on. Note that this mAh is a small percentage.

Change data: 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.