ChargerLAB Power-Z KM003C Portable USB-C Fast Charging Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester

Useful USB C power/charging meter. Provides useful information about charging protocols iavailable and in use. Precision ifmeasurments is ridiculous, far exceeds devices accuracy!

The most capable analysis device for usb-c and thunderbolt at anywhere near this pricepoint, bit of an indulgence for myself but certainly if you are in the business of diagnosing usb/thunderbolt cabling issues you should have one

Absolutely fantastic bit of kit - for 30 days. I'm developing a 100W USB-C PD charger system and this made for really useful quick-glance check that things were as expected. It was working beautifully for almost exactly 30 days and then died one day outside of the Amazon returns window. Typical! I'll be buying another because when it works, it's great. Hopefully I was just unlucky with this first one.

This is a nifty little device that allows you to see the voltage, charging and (what I cared about the most) specs of Thunderbolt cables. There are tons of cables out there that claim to be Thunderbolt but they’re not. With this device you can check every cable. The only caveat: it’s very difficult to use and the online manual seems like it’s written by electrical engineers rather than by someone who understands what the average user wants to do and how to do it. So be prepared for some digging.

Bit of a niche product and a little expensive, but very useful if you have a pile of random USB-C cables and need to find their current, voltage and speed capabilities. Also good for interrogating USB-C PD chargers. Whilst I appreciate the compact size, it would be good if they made a slightly larger version with a bigger screen.

Does the job to tell what your USB-C to USB-C really is. Is it a pure USB x or a Thunderbolt 3 or 4? This device will tell you. Also allows to make precise power consumption measurement over a period of time. Kudos to the manufacturer. Such a device is not easy to find. I recommend.

Ich bin absolut begeistert vom ChargerLAB POWER-Z KM003C! Dieses kleine Gerät (gerade mal ca. 4×4 cm) hat es wirklich in sich. Trotz seiner kompakten Größe ist es ein professionelles Messinstrument, das nahezu alle gängigen Schnelllade-Protokolle und -Modi erkennt und analysieren kann – darunter PD2.0/3.1, QC2.0–5, PPS, UFCS, VOOC, SCP, FCP und viele mehr. Ich habe den Tester mit dem "REVODATA Gigabit PoE zu USB-C Konverter Adapter (Typ-C Ausgang Strom & Ethernet 2 in 1, bis 45 W, 5–20 V)" getestet – und der POWER-Z hat alle unterstützten Lade-Modi auf einmal erkannt! Das zeigt, wie leistungsfähig und präzise die interne Protokollerkennung funktioniert. Das Display ist hell, die Bedienung intuitiv, und über den HID-Port kann man ihn sogar am PC mit der Software auslesen oder Firmware-Updates durchführen. Die Protokoll-Erkennung funktioniert sogar ohne angeschlossenes Gerät, wenn man den Tester separat mit Strom versorgt – einfach genial. Zur Bedienungsanleitung: Es gibt einen QR-Code auf dem Gerät, der zur offiziellen Anleitung führt – diese ist allerdings nur auf Englisch. Mein Tipp: einfach die Datei als PDF oder Markdown herunterladen, bei ChatGPT hochladen, und man bekommt alle Erklärungen direkt auf Deutsch. Ein bisschen technisches Verständnis sollte man allerdings schon mitbringen. ⚡ Fazit: Ein echtes Power-Tool für alle, die Ladegeräte, Kabel oder Schnelllade-Protokolle testen möchten. Klein, präzise, robust und seinen Preis absolut wert. Klasse Gerät – uneingeschränkte Kaufempfehlung!

ChargerLab KM003C is by far the most modern USB-C tester, preserving all cable lines, thus it is Alt DisplayPort compatible and allows for video signal transmission with PD 3.1 support. It is surprisingly small, and the screen displays more information than the competition. By far the best USB tester, kudos to ChargerLab. I am providing an overall comment for three USB testers, all of which deserve to be purchased as they complement each other perfectly and are consistent in their results. I would like to dedicate the majority of this review to the Bit Trade One model, which has recently arrived on Amazon. It deserves a shoutout because the tool is exceptional and inexpensive for what it offers. The ADUSBCIM is a USB cable tester that truly complements traditional USB cable testers. Only the cable to be tested needs to be plugged into the A and B ports, and the tool does the rest. The reference value for calculating the cable's resistance is taken using a CR2032 battery, and I note that the calculation is very precise and stable. You can find on Bit Trade One's ADUSBCIM GitHub page, in the Pull Request section, a manual in English in PDF format. This is my small contribution to the project, as the current official English manual is more of a word-by-word description that is difficult to understand. Thanks to this tester, I discovered, for example, that Anker cables, the 765 series, were actually poor high-resistance cables, and that I had much better options for charging. I ended up wasting money on cables that turned out to be slower than cables that were given to me for free with computer accessories. The FNIRSI FNB58 is a very comprehensive USB-A and USB-C port tester. It notably offers numerous rapid charging protocol tests, can test the quality and resistance of a cable, and obtain oscilloscope-like graphical representations. Now that we are on PD3.0 and with PD3.1 approaching quickly, owning one of these tools is now essential to validate the proper functioning of an installation. I've read a lot of advice on Reddit, and if you're looking to equip yourself with the best products offering the most testing possibilities, here are the tester references to get: - Bit Trade One ADUSBCIM (very thorough cable tester testing all the lines of a cable) - FNIRSI FNB58 (the most comprehensive, many ports, many scenarios, USBA/C Micro) - ChargerLab KM003C (the most modern, TB4, 250W) If you have these three or at least a combination of the cable and usb tester, it will take you no more than a few days to become a USB expert. 👌

Non riesco a far funzionare il cambio di orientamento dello schermo con la rotazione fisica dell'apparato, ma per il resto fa tutto quel che promette ed è un attrezzo insospettabilmente utile, che va maneggiato con cura per non sbagliare. Tenere sempre a portata le istruzioni.

Es una herramienta de diagnostico bastante util, si te interesa conocer la capacidad de carga de tus dispositivos, bancos de energia y los protocolos de carga de los distintos tipos de cargadores, ademas de verificar la veracidad de alguno cargadores, en especial los de Apple. Es un poco elevado el costo, pero si eres técnico o un fanatico de la tecnologia, es una buena herramienta.