YOJOCK USB C Tester USB Power Meter 2 in 1 Digital Multimeter 3.6-32V 0-8.0A Voltage and Current Tester Meter, Type C USB 3.0 Voltmeter Battery Capacity Volt Ammeter Power Bank Charger Detector

Purchased this to test the USB-C ports on my Mac and phone after experiencing charging problems. The tester provides clear voltage and current readings, which made it easy to identify whether the fault was with the cable, charger, or device port. Having both USB-C and USB-A support is very helpful as it works across all my chargers. Straightforward to use and very informative. A useful diagnostic tool for anyone troubleshooting charging issues.

I did pay for this myself and it isn’t part of the Amazon Vine Program. I do have one of these under another brand but needed a 2nd one and this looked the best value at the time. These do seem to be generic, with some having a brand name on them and others don’t. As I test a lot of charger and cables, these are really great for seeing what is happening vs. the spec. Where this differs from similar products is that you can go from USB-A to USB-C and visa versa. I have another design that, if you plug one end into a USB-A port, then the other end must also be plugged into a USB-A port as well. Personally, I find that too restricting. You can change the display arrangements but some are tricky to read due to the amount of info it’s displaying, that is unless you’re up close. I tend to focus predominantly on a setting which shows me Volts, Amps and Watts at that time and ongoing. It is easy to use and the display is clear, if a bit small sometimes. You even get a Micro-USB adapter included and a simple plastic storage case. Pricing on this specific design does tend to fluctuate quite a lot depending on the brand, I paid £16.74 for this one, but have seen these (not this specific one) for £25 upwards. For the price, I thinks it is decent value and highly portable. I did run a comparison test compared to the other one I had, they are exactly the same device, and the readings were the same on both. I hope you found this review & photos interesting, informative, and useful. Thanks for reading.

Proving to be really useful at identifying which chargers and leads are capable of delivering a reasonable output charge to our devices.

A really great little gadget. I guess I’m like most people, over the years you collect a large number of cables. This will test and compare so you can keep the better ones and recycle the poorer ones. Have you ever wondered why some cables charge better than others, this explains that. Works both full USB and the newer, smaller USB C plugs

This is a useful little tester for measuring power consumption of USB devices, whether Type A, Micro-B or C. The display is nice and bright and easy to read, and there are a number of display options to choose from, including live graphs. If you're unsure whether a USB charger is outputting what it should be, or if a device is requesting a fast-charge when it should be, this is an inexpensive tester that'll help you find out.

Just plug this guy either between your power supply and the cable to the device, or between the cable to the device and the device itself, and it tells your the V, A, and resulting wattage. I don’t own like, a commercial grade power meter to verify the accuracy, and since this is just a little, cheap device not by a major company it’s not reviewed by sites that would do that kind of testing. Since it was pretty cheap though — and well rated on here — I figured I may as well give it a go after investing in a high wattage wall adapter and cables. I definitely noticed my devices charging considerably faster and so was quite sure fast charging was happening. This guys readouts aligned perfectly with the results I was getting and so I feel this device is pretty accurate and worked perfectly for what I’m using it for.

Very good USB connection tester. In my case, I was able to prove voltage connection but no data and0 subsequently work on fixing the issue.

Seems to do what it says on the tin. My eyes are not tge best and the font is very small so find it hard to read some of the screens without a magnifying glass

Funciona a la perfeccion, para saber la carga de diferentes cargadores que tenia por casa y en la oficina, asi puedes comprobar si realmente cargan a la potencia que dicen. Da mas informacion de la que necesito, es muy completo y esta hecho con calidad, buena compra.

Wszystko OK , działa jak powinno , polecam Ogólnie mniej niż doba od kliknięcia i przesyłka była dostarczona , szok!

Underbar sak som gör sitt jobb väl. Där ser man om det drar någon ström eller inte laddar alls. Bra verktyg.

It is working now, it looks very good, for how many days the display and device work well ❤️‍🩹

Un peu fragile, surtout le petit connecteur usb-a. Sinon interface complète et précision en rapport avec d’autres appareils de même type