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  • 02/01/2018

    Supports Quickcharge 2.0 and 3.0 with voltages up to 24V and 3A current. Very clear LCD screen, the units has 2 buttons on top and 2 buttons on the bottom that are helpfully labeled in every screen. The display shows momentary voltage and current along with accumulated mAh and mWh. The unit has 10 data groups, Group 0 always resets the accumulated data to 0 when you re-connect the device while groups 1 - 9 remember the data. You can set a minimum trigger current below which the unit will stop counting data (for example if you monitor the charging of a powerbank it might still draw 0.02A even after it is full, if you want to stop counting at that point you can set the trigger current to -for example- 0.05A), a feature i have not seen before on similar devices. Another unique feature is the cable impedence test where you connect the unit (with a load) to a power source and take a measurement, then you unplug the device and connect it via a USB charging cable to take a second measurement, eventually giving you the resistance of the cable. The most prominent feature of this unit of course is the ability to show a Voltage & Current graph, sadly i find that a bit lacking as the screen only shows the last 12 seconds of data, it also resets the graph when you move to another screen. The graph feature seems much more useful in the available PC software that you can connect via bluetooth (UM24C version only), giving the all the functionality of the device in a Windows program along with the possibility of exporting the recorded data. Unfortunately i have not been able to test the connectivity yet since i lack a USB Bluetooth dongle. Overall a very useful USB charge monitor with a colorful screen as opposed to a difficult-to-read segmented LCD-Display.

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  • 26/03/2018

    I have several usb meters, and this one is far better than all others. I really like 1 mA resolution. It really shines when you use mobile or desktop app. It is even more useful when you pair it with electronic load:

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  • 11/01/2018

    Das Messgerät zum Überwachen beim Laden von Handy-akkus, und zur Überwachung der Stromaufnahme über USB und Micro USB.. Dazu sehr Günstig und Genau. Die Software (245MB) läuft perfekt unter Windows10. Diese ergänzt dieses Messgerät komplett. Die Bluetooth-verbindung ist Stabil. Hier wurde echt was gedacht.

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  • 13/01/2018

    Reçu relativement rapidement et bien emballé. Sympa la petite boite en métal, cela change du sachet Zip ! Le manuel d'utilisation à télécharger (en anglais et en couleurs) est pour une fois bien foutu et le logiciel s'installe et fonctionne parfaitement (pour ma part sous MS Windows 8.1 64bits) après l'appairage Bluetooth. Le module se paramètre facilement grâce aux boutons et le fait d'avoir 9 groupes (mémoires en quelque sorte) est utile pour différents types de mesure.Reste à tester la précision, mais là il va falloir que je branche l'oscillo. Bref un petit testeur qui sort du lot des autres clés en tout genre, pour le prix je recommande.

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  • 07/03/2018

    Must have in each DIY persons toolbox. the device can show you voltage current total charge in mah and MWh. it can be used to verify if your charger and charger cable is good and supports gay charging. the device itself is built cleverly. it stands apart from many other testers because of its colour display. I bought UM24C which comes with Bluetooth connectivity. using this option you can watch all parameters on the laptop or your Android mobile. Device came in small tin case.

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  • 02/03/2021

    A very nice product. the color screen has great visibility and clarity. there is no instruction booklet but you can scan a QR code that came in the package to get the instructions. the product also has some nice features as settings brightness levels etc. I would recommend it. it took a month to arrive.

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  • 18/01/2021

    Very good, he does what he says. Easy to connect to both computer and mobile. !!!!

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  • 25/08/2020

    This product gives reasonable values and it is responsive.

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  • 10/04/2019

    المنتج بيجنن والجودة والكفائة فوق الممتاز وسرعة وصول المنتج بمدة زمنية جدا قصيرة والمنتج ممتاز انصح الجميع باقتنائه وفائدته العظيمة في اختبار الأجهزة المحمولة والسعر رخيص شكرا بانحوود

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  • 14/01/2021

    Great product arrived well! Tested working perfectly show

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