USB C Power Meter USB C Tester, USB Multimeter 4.5-50V 0-12A Two-Way Measurement Voltage Current Capacity Amp Volt Voltmeter Ammeter Detector Color Display Digital Tester for Chargers Power Bank Cable

The media could not be loaded. When I have a tool or instrument I like when it’s easy to use without a lot of complicated screens and pressing buttons, and all kinds of multifunction type of things. But this meter you simply just plug it in and that’s it. There are 2 buttons, however, I find that the instructions aren’t quite clear and as always, you need to do your own poking around to find out in your mind how these things work. But most of all it gives you the basic data voltage amperage, wattage, and watts hours. It will show you the accumulative watt hours. The screen auto rotates or what you call gravity screen. Is small and compact and completely enclosed, not like the other ones that look like they have two circuitboard screwed together like a sandwich. It seems to do PD charging. I am learning more about this in their protocols. also with the other USB meters there’s an adapter that you have to plug in for the C type protocol. And it seems like they won’t read anything other than PD‘s type C.It’s looks like they’re not quite made for the other types of USB other than type A. They also have a Data out for Jack. This one does not. For this particular meter it’s visual information that you can see real time. If you look closely at the very tiny bottom banner, it shows how much time it took for the particular charging event as well as peak, wattage and voltage. A very interesting little meter. I recommend this USB meter.

Out of the box it was about +.4V off but once calibrated it's spot on. Easy to do, plug in a charger that puts out exactly 5 volts and go to the language/calibration screen, navigate to the "calibrate" push and hold the down button until it says "OK" While you are calibrating do not have it connected to anything other than the charger. No load.

An amazing inexpensive device that shows what is really going on between your charge and the device it is charging

Does well and is nice and small no over complicated dongles and such to plug in like others

Works as advertised. I use it to test my USB cables, my power banks and chargers. The only negative is that it is not cellphone case friendly, I have to remove the case off my cellphone to use it since its design isn't accommodating due the short connector, this can become a bit labor intensive when testing a variety of phones.

This is ONLY an in-line tester, meaning if you just plug this device into a USB outlet it does nothing. This is an in-line only tester meaning you have to connect it between the power outlet and the device being charged.If you just want to test a USB power source, this is not the device for you.

Much smaller than I realized. Seems to give a great amount of accurate data.

So glad I bought this. It's easy to read, the display can be easily flipped to whatever side I'm on, and it's plug and play simple. I can set it and come back later to see not only the current energy in use, but also the max during the session (it resets when you unplug it). This has helped me determine the charging capabilities of various power banks, AC chargers, and USB-C cables. For cables that have their own meters, this device has confirmed that those meters are functioning properly.