USB Charger Doctor (Voltmeter Ammeter) can easily measure the output voltage of the USB port and the device operating current or load voltage.
Easy to use and practical.
Compact and easy to carry, no additional power supply, plug, and play.
Stable, reliable performance, anti-interference ability, high temperature.
Detect any USB charger such as PC USB, home charger, car charger.
A wide range of applications, any phone, any electronic product.
Suitable for factories, laboratories, and personal use.
USB Charger Doctor (Voltmeter Ammeter) Detection Range:
Voltage: 3V-7V error 0.1V
Current: 0-3A error 0.01A
Size: 63 x 21-34 x 15 mm