Battery Tester USB Transparent Blue Voltmeter Current Capacity Charger Meter Mobile Power Smart Home Portable Timing Test

Condition: New

Plug the device into any USB port, and it will measure the current and voltage of the USB power supply.
Plug any USB device into the socket on the other end of the tester, and the tester will show the charging current, charging voltage, charging time and the total amperage in MAH that has been charged into the device.

You can use the device to test the total battery capacity of any USB device, such as USB power banks, mobile phones, torches, cameras etc. Any device that charges over USB.

The device is plug-and-play; no extra power is required.

Input voltage range: 4-20V, 0-3A.
Measurement Increments: 10mV and 10mA.
Measurement Accuracy: voltage <±1%, current <±2%.
Full-scale Voltage Drop: 200mV.