Just insert the tester between the power source and the cable and you will be able to see the voltage and amperage draw and some other characteristics.
Usb voltage measuring device.
Analog voltage output current device with 16 channels 8 digital i o and 1 counter input.
It can function with any usb a port that has the ability to deliver power.
To measure the voltage then you either touch the meter probes onto the stripped ends of the wires or if your cable end is a large connector then touch the probes without shorting them together onto pins 1 and 4 of the connector.
A lot of the time a usb a cable is plugged into the power source and the other end of the cable will be one that matches the device using the power.
Thermocouple rtd thermistor semiconductor 24 bit resolution 2 s s ch sample rate 8 digital i o and 1 counter input.
Makerhawk usb 3 0 tester usb power meter 3 7 30v 0 4a voltage tester multimeter usb current meter tester ips color display voltmeter ammeter usb charger tester at34 1pcs 4 5 out of 5 stars 213 11 59 11.
It comes with a bright led segment display.
Not all usb ports on your laptop or desktop are the same.
It accurately and reliably measures and displays the usb port voltage current capacity energy and resistance simultaneously.
Temperature and voltage measurement device with 8 channels supports 4 sensor types including.
Features enabled to measure usb devices at no load and over load condition also for usb terminals testing.
The klein tools et900 is a usb digital meter for common standard usb a type a ports including qualcomm quick charge ports.
Analog voltage output device with 4 high drive channels 8 digital i o and 1 counter input.
A very useful device for usb port checking and charger use it you can check if the usb port is active or if a battery of external device is charge or if current is not exceeding limits.
Analog voltage output device with 8 high drive channels 8 digital i o and 1 counter input.