FNIRSI Usb Battery Tester Voltmeter Ammeter Type-C Fast Charge Detection Trigger Capacity Measurement Ripple Measurement, Multicolor

Best for price, works as intented. Make sure to use input for input only, and same for output. Flickers a bit when undervolted. Firmware update make sit work more good. Bluetooth app by FNIRSI works only after GPS is turned on and pairs only via app. Its weird n unnecessary yet ok. Accuracy is fine maybe 1-2% vary.

I needed something to check the hardware side projects i create where I power then with type c decoys. This board helps me quickly diagnose and failures in design and is able to trigger output voltages for different type c spec level. The graph over time and stats feature is really useful and i am currently using this with the desktop app which is working flawlessly.

Most useful product , for our work it is too useful.Thank you

Superb

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. 👌

Doesnt display mah which is what i needed this for. Displays absolutely everything else but. Annoying it doesnt show basic mainly used use case of battery capacity, but makes you work it out from other measures. Has many screens, not on any of them, cannot set it to display mah, very hard to use overall vs many other similar products - so expensive and got a lot of stuff i dont need with it, and not the basic function i do need.

Excelente producto superó mis espectativas

Vi varias reseñas en YT y todas apuntaban a este medidor de entre muchos. Hace la función y adicionales pero la calidad de fabricación externa se siente algo barata.

Good quality USB meter which allows USB data passthrough, the readings look accurate when compared to the measurements from my 737 power bank. It is simple to navigate, and can also test battery capacity which is very useful and it also allows you to set the battery voltage and estimated charging efficiency with 10 profile save slots available. I recommend keeping the device plugged in with the top left micro USB port to stop the unexpected power offs while testing, and for when you want to keep the toggle switch "pd com" as off which will bypass the fnb58 handshake with the charger and instead allows USB C negotiation directly between the phone and charging brick.