USB-A Multimeter

Works perfectly straight out of the box, i use it to see what current is being drawn from my repairs. It works with a multitude of adapters. Crystal clear picture on the screen and very informative. For the price paid, this is an absolute gem of a device. Must have for any repair enthusiast!

Works well

Its good for the price and the display is excellent only problem is sometimes it wont come on or start but works fine again when unplugged and reinserted

For the price I cannot fault it and it's a really handy bit of kit for running quick tests. This is a small unit so the display is small, but it is clear. Unit does appear to be accurate, and I've been using it to check power delivery from chargers and PC ports, as well as to check some cables I thought were causing charging issues (this unit confirmed some cables I had really dropped the delivered amps).

Very useful to diagnose drained devices that don’t manifest any charge characteristics.

I noticed the protective film was missing and screen slightly scuffed. Looks like it is a returned item. It also gave inconsistent readings and did not reset consistently. Very difficult to read small text on the Manual

Great item super fast delivery works well no problems.

Does everything the description says. I was worried at first because it rattled when shook but this was just the button moving in it's hole. Whether this becomes a problem later has to be seen.

Ok

Bought 2. It was some difference between them. Both worked. Nice display. Very good case who protected them in transport.

Used the devcice to measure power consumption of external USB SSD disks. Works fine. But the throughput of my USB 3.0 external SSD disk drops from about 100 Mb/s (connected directly to the PSC port) to 37 MB/s. That makes the measurement less acurate. When I connect an older USB 2.0 external SSD drive, the throughput is hardly affected and stays about 35 MB/s. So in my opinion it should not be called USB 3.0 tester.

.......tel qu'évoqué par le descriptif et les photos. Ce qui permet de tester la capacité des chargeurs par comparaison entre eux. De même pour les appareils connectés. Ceci faisant un excellent rapport capacité/prix. Et tout petit.....trop car l'affichage sur un écran à peine de la taille d'un timbre poste nécessite un effort visuel. Mais cependant bien lumineux avec des couleurs différentes, intelligemment dédiées à chaque valeur. NB: j'ai cru bon de me procurer un prolongateur USB M/F de manière à l'avoir dans les mains et non accolé à un chargeur connecté sur prise murale. je confirme, 5*......pour ceux qui veulent savoir ! !

The **YOJOCK USB Tester Multimeter Digital 4-30V 0-6.5A** is a highly versatile and accurate power meter designed for testing voltage, current, and capacity for various devices, including power banks, chargers, and USB-powered gadgets. With its IPS color display, the device offers a clear and easy-to-read interface that shows real-time data on voltage, current, and power usage. ### Pros: 1. **Clear IPS Color Display**: The vibrant, high-resolution screen provides a bright and clear view of real-time measurements, making it easy to track voltage, current, and other key data. 2. **Wide Range of Measurements**: Capable of measuring voltage from 4V to 30V and current from 0A to 6.5A, this tester is perfect for a wide range of USB devices, including power banks, chargers, and even solar panels. 3. **QC 3.0 Support**: The device supports Quick Charge 3.0 technology, which is ideal for testing fast-charging devices and ensuring they're working at optimal speed. 4. **Compact and Portable**: The small, lightweight design makes it easy to carry and use on the go, whether you're a DIY electronics enthusiast or a professional technician. 5. **Multi-Functionality**: In addition to voltage and current testing, it also functions as a power bank capacity tester, allowing you to monitor the health and charge cycles of your power banks. ### Cons: 1. **Limited to USB Applications**: While excellent for USB-powered devices, this tester doesn’t cover a wider range of power testing outside the USB scope, limiting its use for non-USB projects. 2. **Requires Power Source**: Like many testers, it needs an active device to provide power for proper readings, which could be a minor limitation in some cases. ### Conclusion: The **YOJOCK USB Tester Multimeter** is an excellent tool for anyone who frequently works with USB devices and needs precise measurements for voltage, current, and capacity. The IPS color display is a standout feature, providing clear and detailed data, while its compact design makes it portable and easy to use. Whether you’re testing chargers, power banks, or other USB devices, this tester offers great value and reliability. It’s an essential tool for tech enthusiasts and professionals who require accurate and real-time testing.