Best USB Tester Reviews

A USB tester is a simple measuring tool that is widely utilized for several measurements of the electrical properties of USB. It measures the USB current, voltage, power, charging speed, discharge capacity, and so on.

In addition to its functions, simultaneously, the current state of the art of the USB tester can also be applied to overvoltage or low voltage current protection. This advantage allows you to easily find out the charging problems with USB cables, car charging, wall chargers, etc.

These testers can also support QC 2.0 / 3.0, BC1.2, Apple iPhone 2.4A, and other fast charging protocol for high voltage testing to safeguard your precious electronic equipment.

Another great thing is the monitoring of the charging time can also be done with just a glance and real-time as well. A small screen provides the HD display of various values with continuous refreshing. It’s also able to automatically cut the power when the device has been fully charged.

USB TesterThese testers can also come with small internal storage for storage and later comparison of the recorded data.

The USB tester can be applied to a variety of electronic circuits/devices like mobile phones, tablets, cameras, power banks, and various other portable devices. Beginners don’t need to worry because they are very simple and easy to operate without any major complexities. You just need to plug and ready to monitor.

While there are a lot of choices of USB testers, in this article, we are going to suggest some recommendations for USB testers. These are 5 best USB testers that we gather from the market and hopefully, one of them suits your needs.

1. KJ-KayJI
[Best Overall]
- 2 in 1 USB tester
- IPS screen
- comes with clip cable suppor
Check Price!
2. PemenolSupporting 3 input: Regular USB, USB type C, and Micro USBCheck Price!
3. YogreSupporting the USB interface with electronic devices ranging from 3V-30V and 0.00-5.10 A.Check Price!
4. MakerHawk It is compatible with QC 2.0/3.0 and PD protocolCheck Price!
5. MakerHawkSupporting regular USB and Type-C port, DC 4.0- 24V 5.00A USB charger, HD IPS color screen displayCheck Price!

Top 5 Best USB Tester Reviews 2022

1. KJ-KayJI Regular & USB C Tester [Best Overall]

Best USB TesterThis is the overall best USB tester that we recommend first. It’s a 2 in 1 USB tester, IPS digital multimeter, and comes with clip cable support. All of these provide a perfect combination for tech lovers.

The multimeter can monitor different parameters at a time which include current, voltage, capacity, power, D/D- voltage, electric quantity, temperature, load impedance, resistance, charging time, and other relevant data for USB or type C port gadgets.

In terms of the screen display, it contains the latest version of the IPS color screen which also provides eight colors for different data and makes it clearer. A 180-degree flipping feature is also available in this multifunctional device.

In addition to the data monitoring function, this measuring device comes up with build-in circuits for overload voltage protection, low voltage protection, and over current protection to avoid any type of MA functionality at user devices.

Overall, we love to recommend this. It supports QC3.0 (3.8-12V), Android BC1.2 (5V), QC2.0 (5V/9V/12V/20V), MTK-PE (5V/7V/9V/12V), Apple 5V/2.5A, and various other QUALCOMM fast chargers. It can ensure the safety of devices while meeting the output of two devices at the same time.

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  • High Resolution of recorded data
  • Can perform multifunction’s at a time
  • 18 months of warranty
  • Current adjustment according to the ambient temperature change


  • Large size 2.5 × 2 × 0.4 inches
  • High self-current consumption

2. Pemenol Multifunctional USB Tester + Supply Module

Pemenol Multifunctional USB TesterMultifunctional voltage, ammeter, and temperature display integrated with the buck-boost power supply module make this gadget more reliable for not only testing the electronic equipment but also serve as a variable power supply.

Its automatic calibration, safety, auto-protection, real-time display, and portability, can perfectly suitable for technical engineers to develop, debug electronic instruments. It supports three voltage inputs ways: Regular USB, USB type C, and Micro USB. This USB tester is also very easy to carry and comes with an outer shell for protection against step-up module damaged.

This gadget can protect your hardware from being damaged from overpowering, over current, and under-voltage. The buck-boost converter can automatically calibrate the voltage and current to meet your requirements accurately.

It can convert DC 3.0V-12V to DC 1.0V-24 V and power approximately 2W-3W. You could use it on various small devices, like laptops, chargers, etc. as a multifunctional voltage ammeter. Further, it can also use for providing require DC power to certain low power projects.

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  • Dual Operating System
  • Three voltage inputs ways
  • Automatic calibration of voltage and current
  • High power measuring range 0-110W
  • Mini size


  • This device does not support protection against reverse connection
  • Low power supply range
  • Each time you have to adjust the working mode before use.

3. Yogre USB Tester

Yogre USB testerYogre USB 3.0 tester is a premium quality low cost solution to examine the USB charging voltage and current instantly. It’s lightweight, small size, durable, and extremely portable. No extra cables or power sources are needed to operate. It supports the USB interface with electronic devices ranging from 3V-30V and 0.00-5.10 A.

This USB tester is extensively utilized in the scrutiny of 3C digital peripheral solutions. This device successfully ensures the protection of our digital devices. It has a voltage measurement resolution of 0.01 V along with a current measurement resolution of 0.01A. It can operate in a significant temperature range of from -10⁰C up to 60⁰C.

On this tester, you could simply set up your timer off or full charge power off. That means the tester has two functions, either you can set a timer to turn off the tester or turn the tester off automatically when the charging is full. It will automatically cut the power with a notification sound. Real-time monitoring of voltage and current values can be done through this, but when you set a specific value the tester will give a beep and power off automatically until the value falls or exceed above that.

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  • High quality with low cost
  • Small size with the dimensions of 3.78 × 1.89 × 0.98 inches
  • Good capacity measurement range of 0-99999mAh


  • It cannot detect the fast charging feature
  • Dull display
  • Low voltage measuring resolution

4. MakerHawk USB Tester

MakerHawk USB TesterHigh quality, reasonable price, and small size make this USB tester more attractive for buyers. There is no need for any type of professional wiring. You just plug in this MakerHawk USB tester and you could directly see the charging status, capacity, and USB power supply in real-time.

This device also comes up with a good quality alarm system to protect the device from over-voltage, over-current, under-voltage, and under current conditions. The intelligent automatic power-off system makes it more appealing when considering the high-quality tester at a reasonable price.

This device has an operating range of 50-100MA. It can store mAH power-off for a maximum of 9 different groups of operating devices to keep the data and compare it to find out whether the capacitance of the charging gadget is true or false.

With the HD color display screen, the data on the tester’s screen will be brighter and clearer. It is compatible with QC 2.0/3.0 and PD protocol and intelligently detects fast charging as well.

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  • Good quality with a reasonable price
  • Intelligent memory charging capacity
  • Temperature Measurement


  • Provides rough details about the capacitance
  • Limited Features
  • Low refreshing rate

5. MakerHawk Multimeter USB Tester

MakerHawk Multimeter USB TesterHigh-resolution voltage, current resistance meter supported with regular USB and Type-C port, DC 4.0- 24V 5.00A USB charger, HD IPS color screen display, and much more comes up with this small high-tech gadget.

The USB input port can withstand a high current range up to 5A supported with high power input. It consists of an internal as well as external NTC temperature sensor which enables us to identify the temperature during measuring or providing the high power to the output. These sensors have a wide range of measurements: -20⁰C – +120⁰C.

It is recommended to use Type-C port when high power input or output is needed. This device comes up with a wide IPS HD color LCD screen for data monitoring from different ports at the same time. It has the capacity record of 0-99999Ah along with 0-99999Wh.

The IPS screen will help you see the reading clearly even though you are outdoor.

Built-in functional protect your devices in under-voltage and an over-current situation. Precision, accuracy, high resolution of 0.00001 for both current and voltage measurement makes this device more appealing for testing pricy equipment.

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  • Exception level of resolution
  • Internal / External Temperature sensors
  • Can perform High current and high-power operations
  • Automatic recovery of voltage


  • Only Type-C can handle high power
  • Large size 2.64 × 1.5 × 0.47 inches
  • High Self-power consumption

Buying Guide of USB Tester

We have spent plenty of hours researching, comparing, and deciding the best USB tester off all specifications and needs on Amazon.

However, Amazon is not the only online platform that sells USB voltage testers, but due to his good recommendation list, proper specification records, and easy navigation make amazon more attractive to find out the best product in a very short period.

The above-listed five USB testers are the best available on Amazon according to their features and price. Although most USB voltage testers have a similar feature, they vary in resolution rate, protection functions, voltage input methods, maximum output power, size, and durability. These fundamental features must be checked properly before purchasing the USB tester.

Customer ratings also play an important parameter to verify the listed features on the website. In the end, make sure that your selected USB tester is backed by a good manufacturer and having some months of warranty.


The above-mentioned USB tester is the best solution to test your electronic devices/components. They vary in price according to the number of features and resolution of recorded data. These testers are widely used in testing single small devices and provide real-time monitoring of data which is helpful in the protection of pricy devices.

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