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

The media could not be loaded. I received 2 of these for Christmas 5 months ago. I am in no way associated with the company, I just found a good product and would like others to know.Features: you can turn off the screen, change between °C and °F, it records how much power was used, you can access multiple records of power usage, data transfer is unaffected.It reads between 3.6V to 5.4V (so far), however the screen turns black when usb-c fast charge exceeds ~6V, though it is very temporary and limits 9V to 5v usb-c. In general, the amps (blue) read between .001 to 2.8, yet to see 3+. The higher the amps are, the faster the charger.I use it to determine how much power many different chargers use, both in amperage and watt-hours of capacity. I also use it to find the best angle to place my usb solar panel, which is often straight up on a cloudy day.It is seated well in the housing, not wiggling or sliding around like my green thumb drive(hence the glue). It also comes with a usb plastic cap for the male end, and a folding plastic case, though it’s durable and I carry it without the case to save space.This is accurate, i tested it with a 22Ω+ 10Ω resistor in series to make a higher wattage 32Ω resistor, along with an ohms law calculator to compare. The meter read 32.2-32.4 ohms, which is very respectable (usb cable has a little resistance) and the other math checks out as well. I read how some have inaccurate meters, but I guess it’s been fixed since then.Overall, if you want to check how fast something charges, what voltage your charger is at(safety shut-off), how much power is consumed, and even the resistance of your charger+battery, then this is the meter for you.(Yes, that does seem kinda staged like an ad, but it is a good product)

Works good and has a nice bright, albeit small display that you may need a magnifying glass to see but there is only so much tech that you can cram into a small form factor device.

It works as advertised. The display is small which was expected.My first complaint is that the amperage display (most important to me) is blue on black which I find hard to read. The second is that you must download an app to read the english instructions. Of course I refuse to install a pontentially dangerous app. I figured out how to use it from the images above.

The MakerHawk USB 3.0 tester has exceeded my expectations! Its accurate voltage and current measurement capabilities provide valuable insights into the performance of my USB devices. The compact design and user-friendly interface make it a breeze to use, allowing me to troubleshoot and optimize my setups effortlessly. This tester has become an essential tool in my tech toolkit, and I highly recommend it to anyone looking for a reliable and efficient USB testing solution.

Works just fine. Kind of basic. but does the job.

I bought this to test different USB cables that I could use with either of our 2 phones. Turns out that some of the cables did not provide nearly as much of A charge as some other cables do. So this helped me weed out cables that do load charges as opposed to the cables that charge much faster.

For the price it's a great little tool for seeing how many volts and amps is being yanked out of your plug to power your phone or tablet or whatever.

meh. i had to download a pdf in Chinese, drop it into google translate to identify what the capabilities are. I came this close to returning it, simply due to lack of docs. If there is an App, it isn't clear where to DL that app. really not needed, but I find that i wasted some time just to read the docs.I'd give a better review, if it weren't for the POOR doc.