PC USB Voltage Current Meter Detector Test Charger Doctor for Mobile Phone Power
1.Compact and easy to carry, no additional power supply.
2.Current and voltage loop display, easy to use and practical.
3.USB charger can detect whether the target output voltage and current.
4.Stable, reliable performance, anti-interference ability, high temperature.
5.Convenient measurement of the output voltage of the usb port and the device operating current.
6.Measure usb powered devices,load voltage,usb terminal equipment when working voltage.
7.Uses electricity generation four semi-double loop integral converter IC, with precision bandgap reference, range accuracy.
8.Can measure usb interface,cell phone charger, u disk and other products or power supply situation.
Resolution:Voltage 10mv current 1ma
Error:Voltage <1% ,current <2%
1 x USB Power Tester
A better version voltage tester is also available follow the link which can check your mobile phone charger output, power bank actual capacity, and many more functions
USB Voltage Current and Capacity Tester For Cell Phone & Power Bank