USB 3.1 Power Meter Tester Digital Multimeter Current Tester Voltage Detector Lua interpreter integrated DC 26.0000V 6.0000A Test Speed of Charger Cables PD 2.0/3.0 QC 2.0/3.0/4.0 pps Trigge

This USB meter is very powerful. Build quality looks good. The large TFT screen helps to read easily. It has some common features like monitoring voltage, current, energy, power, capacity, and time with high accuracy. It also has wide operating range of 3.7-25V, 0-5A but a low quiescent current of 1mA@5V. Moreover, it has built-in clock and temperature sensor while most of the other usb meters don’t. Like some other usb meters, it supports dual-way detection thus don’t have to plug the input cable into the IN port, but the OUT port works as well. Furthermore, it has 5 different views of the home screen including everything on one page, D+ D- voltages & current direction & possible + current charging protocols, time and energy consumption, simple look with large fonts, and black screen. And It will automatically enter power saving screen when idle.The electronic load is fairly easy to use. Turn the knob clockwise/counterclockwise to increase/decrease the current. The fan will automatically turn on when the temperature is higher than 40℃ to keep it cool. Good for performing stress test on a power adapter or measuring the capacity of a power bank.Next is the advanced part I’d like to comment in detail.[Operations]All operations are carried out with the scroller.>Short press - switches/enters/confirms>Long press - enters the main menu>Double press - enters the charting mode/exits to the home screen>Short turn forward/backward - enters a mode/scrolls through menu options/triggers an action/increases or decreases a value>Long turn (turn and hold) forward/backward - enters a mode/scrolls through menu options/triggers an action/increases or decreases a value[Groups]Short turn forward to clean the current group.Can switch between 5 groups for different tests.[Charting]Double press to enter, short press to switch between V-A and Vd+/Vd-.Draws a V-A or Vd+/Vd- chart with real-time data at a selected sample rate[FastCharge Trigger]UNPLUG any device before doing this as it may DAMAGE your device!Short turn backward to enter. Short turn forward/backward again after the red warning message flashes three times. Short turn backward once more to release if triggered.Triggers different voltages that a power supply can deliver.>QC2.0 - triggers 5/9/12/20V if supported.>QC3.0 - triggers 5-20V, increases/decreases 200mV per time, if supported>Auto Detect - automatically detects the charging technologies the power supply supported and shows them in green. Helps to pick a power supply with high compatibility.>Apple 2.4A - makes a regular charger to charge like an apple 2.4A charger. Lets a regular charger charges an apple device faster.>Apple MFI Test - checks if a lightning cable is MFi certified. Helps to pick a good lightning cable. (Needs a QC3.0 charger)>Power Delivery - checks the PDOs the PD charger offered and triggers the voltages (Needs to turn on the PD trigger switch first)>HUAWEI FCP - triggers HUAWEI FCP voltages 5/9V.>Samsung AFC - triggers Samsung AFC voltages 5/9V.[Cable Resistance Test]Long turn backward to enter. Needs to use with the electronic load together to adjust the output current to 500mA or greater.Tests the ESR of a usb cable. Usually a better cable has a lower ESR.In addition, a lot of settings can be found in the main menu. It’s awesome that a firmware update will bring more new features. It’s really a combination of all my current usb meters/triggers with even more features. Powerful and useful. I wish bluetooth connection and PC/Smartphone apps would be found in a later version of this product.(I did everything pretty quick in the video to save your time.)------------- UPDATE 12/27/2017 -------------CT-2 Part[Independently/Externally Powered]Powered via the Micro USB port. Can measure DC 0.1-26V with this. Useful to check Ni-MH rechargeable batteries.[Offline Curve Recording]Short turn forward to enter.Records the voltage and current points. Will generate a curve diagram when finished recording. A charge curve helps determine if a charger is good. Also, the curve records can be accessed in the PC app.[PC App]Shows the curve diagram directly. Can save/export the curve diagram to a file and open the diagram recorded on the meter or computer.Tracks the communication between a charger (source) and a device (sink) with PD Listen. Will let you know how a PD charger charges a device. Needs the PD Tester switch to be turned on.Boot logo and theme can be easily customized here.Can perform firmware update here as well.I also updated the video.I am looking forward to the next version!

This is USB Meter Tester Current Tester & Voltage Detector is an amazing high quality product, that will give you real time and precise readings for your testing or hobby needs! The color LCD screen is crisp and clear and the display is bright too! You can record your tests in 5 groups for later comparisons. Also well built and the case is perfect for storing it! Please see my video review of this product! Thank you , Take care!**Updating firmware and using USB 3.0 trigger or PD trigger is at users own risk. Company and reviewer are not liable for damage to unit or device!

Best device in this category of USB sub-30v meters with PC connect.Pros: + very well thought out meter and well integrated Windows PC software, though a wishlist is posted below + well constructed metal top and bottom plates with basic operations tips inscribed on bottom + nice touch including two pre-cut and drilled clear plexiglass covers for top and bottom of the meterCons: - wish the ChargerLAB Power-Z PC software could translate to CSV format instead of proprietary format - wish there was an OSX version of the ChargerLAB software, which would likely mean a Linux version could be created as well

This unit is the best one I've ever used, especially for QC and USB-C PD code injection. This really shows which extension cables pass the codes as well. If you want an excellent tester, then buy this one. The adjustable load that came with it is nice, but caps out on wattage; therefore, consider a higher wattage model if you need one.I learned a lot of things testing my cell phone, like how the Galaxy S6 stays at 9V, but drops its call for higher amperage when the screen turns on, which was interesting. I also learned how the S6 limits its current draw as its internal temperature increases.This is a must for testing cheap overseas power supplies using the built-in code injector and not your iPad Pro. Now I know which ones I can buy in quantity and recommend to others. TWO THUMBS UP !!!

I've always wanted to test USB PD compliance on my devices and this guy is finally it! I've been running around testing all my Type-C devices and was able to even find false info given out by the manufacturers.Pros:1) Tests USB PD compliance up to 3.0.2) Automatically tests for other USB protocols (Apple/Samsung/QC2.0/3.0/etc).3) Accurate & easy to understand USB multimeter.4) Offline power/energy metering, built-in data storage and graphing.5) Online metering via KotomiApp for Windows.6) Can be externally powered via micro USB so the device itself does not draw power from source under test.Cons:1) Sometimes the USB PD connection is bit finicky. I've had to toggle the PD switch on/off to get it to connect.2) The 2 second intentional wait to dismiss the red fast charge warning gets old, real quick. Fortunately USB PD test can be triggered by holding down while plugging in the Type-C cable.3) Documentation for the device itself is good, but would have appreciated additional docs for the KotomiApp.4) Provided USB-A load only goes up to 2.90A. Would've liked to see one that goes higher, and/or can load via Type-C/USB PD voltages (9V/15V/20V).5) Would've liked to see more memory for more than 3750 points (3750 seconds @ 1fps) for offline recording. Not a huge deal as I can connect to the KotomiApp to record unlimited points/time.The included quick reference guide is OK, but definitely recommend reading the full PDF manual online for all features.For reference, from the main screen, tap:Left: Fast Charging Trigger (tests USB protocols).Right: Offline Recording (store realtime data)Down (2x): Realtime graph of V vs I, and D+/-Down (hold for 2s): Main Menu (switch groups, configs)To go back to the main screen at any point, press down (2x).