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)

Love this thing. I like being able to test the output and input to some of my devices to make sure they are getting what they need.easy to use.easy to read the voltage.

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.

Nice, used for travel

Great Tool for 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.

Works Great!

VERY GOOD!!!