MakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power Capacity Charger Type C Meter Tester LCD Display Cable Resistance QC2.0/3.0/4.0 N20 1.54 Inch Screen

This is one of my favorite purchases from Amazon in a while. I didn't realize how much I needed it until I had it. I was able to go through all my cables and purge the ones that had some bad internal connections, was also able to check on some USB power banks, and also test each of my USB wall blocks. It's amazing how much you learn in a short time about your different chargers and cables and how different they can be. Some wall blocks put out too much voltage (which is why I bought this tester, because I had a brand new wall block fry a security camera by putting out too much voltage), and it's also fascinating that some cables seem to intentionally provide imline voltage control even one paired with a wall block that is putting out too much juice. The device itself is really easy to use and has lots of intuitive features. This was money very well spent for me and although I'll probably never use it as much as I did in the first 24 hours, it's a handy thing to have around because it's hard to test USB stuff with a regular meter. Mostly it's just cool as all get out.

When plugged into USB C, screen just flashes. I flipped the cables around to get it working but took multiple attempts to get the screen to stay on. Phone is reporting its slow and rapidly charging in a loop. I would test this hard within the first month before you're out of the return Window. I'm lucky this went out within a few days of testing.

The device it self works fine. As described to be honest. My issue is with the way they packaged it on the inside of the metal case. They nutted up the C 2 C adapter right up against the device in the metal case. Well now the help button is broken. How broken? The bitten was pushed through the back housing of the button and came out. Thankfully I don't need the help button so I won't return it saving me a little time out of my day.

Very useful for those little widgets that need to be powered up all the time. WIIM, for instance.Good readout and simple to use.

I have to write something to make the A....n review bot happy, which I think is ridiculous, considering I gave this item an excellent review

The device itself works decently and is fairly accurate. However, mine came with one of the buttons broken off and I chose to solder it back on instead of returing it.

Compact but powerful little meter. Seems to measure well within the 1% accuracy advertised. Best $20 I've spent on a meter of this type. I don't use all the functions but great for checking the gazillion phone chargers I have and which ones are putting out the juice. Plus checking battery paks as well. Highly recommend.

I use solar panels to charge battery packs and other devices when backpacking/camping. This meter was supposed to help me determine if my equipment was performing at optimal levels, at home and on the trail.The meter came in a tin box that had no hermetically sealed wrapping and no secured retail packaging. I found it very odd that the manufacturer did not do a better job of securing their product. After opening the tin box, I saw nothing that looked strange or out of place. Unfortunately, as seen in the pic, when I plugged the meter into one of my battery packs, I immediately saw that the digital display was damaged.After seeing the damage, I decided to take a closer look at the meter and that's when I discovered a significant design flaw.While viewing the pics on Amazon's web page, it looks as though the manufacturer used a thin layer of plate glass to cover/protect the digital display, but to my surprise, the manufacturer used some sort of semi-flexible, clear polymer resin material. As a test on the damaged meter, while using only the lightest finger touch, I noticed that the polymer cover slightly depressed in the direction of the digital display. After seeing the polymer cover flex, I now believe that if enough force is applied (and it probably wouldn't take much), the cover could actually touch the digital display and damage/destroy it. Would it really have cost so much more for the manufacturer to use plate glass as a cover/protector, rather than going with ultra-cheap plastic?Did the damage happen at the manufacturer? Did it happen in transit? At Amazon? Since the tin box was not sealed by the manufacturer, there's really no way to know when and where the damage occurred. What I do know is this: If this meter can't survive the trip from the factory to my home, what are the chances of it surviving your average backpacking/camping trip? Without adding a bulky and heavy container to my gear, I'd say the odds are ZERO.I really wanted this meter to work because I liked the idea of the large display. Fortunately, Amazon refunded my purchase price, so it's back to Amazon to find another meter that is more robust and isn't going to break before I even get a chance to use it. If I could, I would have given NO stars.CHEAP PARTS = BAD QUALITY & FAULTY PRODUCTS