YOJOCKUSB 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

Very useful meter for testing USB power supplies, easy to use , recommended

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.

The media could not be loaded.  Interesting device. Very good interface. I'm surprise how fast reed voltage, current,CPU temperature. Real time update also A,mA,mAh,Wh,W,Omh,megerment unit's. That is wonderful gadget. Display is nice and well visible. Just that feeling of cheep plastic case need updating. General I'm happy to have. I find very handy gadget. I wish to see better design with big display simular like multi usb hub. 👏😅 Thanks

It does what's described if you need to check voltage and pretty much anything else about your USB sockets.It has a number of different digital display layouts to choose from.Very useful.

5-star review overall, for the following reasons: using this meant I could confirm that an Apple 140w power supply will deliver an indicated 140w of power via the magsafe 3, into a MacBook Pro 16" M1 and using usb-c will supply "only" an indicated 95w.As regards Windows, I only have an older XPS 15, interestingly this will only draw an indicated 60w 'ish - usb-c.I'm not able to confirm the absolute accuracy of the indicated numbers, however they ring true - device to device.The 4-stars for each separate element are because the display is tiny and the unit does not feel completely secure and stable when plugged in, cable inserted etc. As above the power numbers seem realistic, I'm not able to verify.My conclusion would be that a 96w usb-c charger will do as much as most people likely need/can use, check that your laptop/cable is able to draw more than this before hunting down the largest usb-c power supplies.

good to confirm your charging state and power of your charger , this day we get into having more chargers,cabel and device then we can count . so this help makinng sure device charge correctly with right V and A

This is a fun product. Really useful tool that takes the guess work out of checking current with a visual guide. Thank you.

It works well, there are only two downsides.The first is that the OLED screen is very small and very densely packed with information. It is quite hard to read.The second is a bit of a facepalm when plugged into USB-A. There’s a 50% chance of the display facing to the floor making it impossible to read!

Worked very well for testing small electronic device's power draw during charging. Used to test bike lights and charging batteries... worked well.

Grest accuracy, good quality, adaptable and versatile, just but it , it works

Top Messwerkzeug!Funktionen einwandfrei und ist recht genau würde ich sagen.Habe es mit einen Voltmeter verglichen und passt soweit die angezeigten Werte :)Wirkt auch gut verarbeitet für den Preis.

Quand j'ai reçu ce testeur, j'ai d'abord été perplexe avec les indications input et output, parce que les raccords mâle/femelle n'étaient pas vraiment malins. Après tout les chargeurs ont généralement un embout mâle , et là l'entrée aussi... Alors j'ai commandé une série d'adaptateurs USB-A et USB-C mâle et femelle, jusqu'à ce que je finisse par tomber sur un commentaire indiquant que les entrées et sorties peuvent être inversées sans problème !Donc : le sens n'a pas d'importance. L'afficheur indiquera les bonnes valeurs et une petite flèche pour indiquer le "sens" du courant.Et c'est ainsi que j'ai pu tester différents câbles USB, certains vendus pour 60, 100 voire 240W, et constater que si certains étaient conformes (câbles USB-C Thunderbolt 4), d'autres vendus pour 240 étaient en fait d'humbles câbles supportant au maximum 60W.En tant que testeur Vine (j'ai payé ce testeur), on m'a proposé des batteries externes (powerbanks) de 20000 mAh et 27000 mAh, avec des commentaires d'autres testeurs dithyrambiques. Et surprise ! La mesure réelle est de 12000 pour le premier et 13-15000 pour le second ! Et donc je me retrouve l'un des rares à coller deux étoiles, parce que grâce à cet outil, je connais la vérité :)Le mode d'emploi, en anglais, allemand et chinois, est parfois un peu difficile à comprendre, traduction parfois douteuse, mais explique comment tout brancher, tout mesurer, tester les câbles, la capacité réelle d'une batterie, etc. Bref, c'est un super produit.

Het is prima en heel nuttig artikel