Villageboom USB Tester Meter Voltmeter Multimeter Voltage Current Ammeter Meter LCD Display

• Used to test the supply voltage, current and load capacity over a period of time. With the USB multimeter, you can test the power of battery and power bank.
• Accuracy up to 0.01 A 0.01 V 0.05 A - 3 A; current range: 50 - 3000 mA; voltage range: 4 DC - 30 V; capacity display: 0 - 19999 mAh
• With USB cable. Multimeter with USB cable is more flexible and handy when connecting to the power supplies. It is also much more convenient to read the data.

Do you want to know why your phone needs different lengths for charging? Does the battery still have the same capacity as the original? What does the power bank really do? You only need a USB multimeter. The USB multimeter shows the voltage (volts), the current (amps) and the power (milliamp per hour). Specifications: Input Voltage: 4V-30V Current: 0.05A-3.A Resolution of Voltage: 0.01V Resolution of Current: 0.01A Capacity: 0-19999mAh Colour: White Model: KCX17