White Tail LCD Backlight LCD Digital Display USB Ammeter Voltmeter Charge Capacity Detection Table Detector

Voltage and current measurement: the male USB plug is plugged into a 5V charger, the female plug is inserted into the mobile phone and other equipment, and the voltage and current parameters are read directly. Measure the quality of the MicroUSB cable: plug in the mobile phone and other equipment, first plug the 5V charger with the male plug, recall the voltage, and then insert the MicroUSB cable of the 5V charger into the MicroUSB hole of the machine to memorize the voltage. , the voltage gap is smaller The higher the quality of the MicroUSB cable.Measure the output capacity and efficiency of the mobile power supply: first connect the mobile power supply to the mobile phone, turn on the mobile power supply, hold the button until the capacity data returns to zero, insert the phone several times until the power is turned off automatically.The display capacity is the mAH of the mobile power output when the unit is next powered on. Note that this mAH is bea 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: Hold the button for more than 3 seconds to clear the group data.