We’ve spent hundreds of hours researching and comparing Usb Voltage Monitor of all specifications to find the best one for any need (or budget). Here are the results.

The Best Usb Voltage Monitor of 2020 – Top Rated & Reviewed

2,023 Reviews Scanned

Rank No. #1
USB C Tester,KJ-KayJI 2 in 1 Type C USB Tester Color Screen IPS Digital Multimeter,Voltage,Current,Power,Resistance,Temperature,Capacity Detector,with clip cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2
  • 【Latest Upgraded USB C Power Meter Tester】:Maximum voltage Current 32V/5.1A/150W,The multimeter tester can monitor Voltage,Current,Capacity,Electric Quantity,Power,Temperature,Resistance,Charging Time and other data of the USB or type C Port Devices.A Must Gadget checks the charging performance(charging speed and quality) of the output wall/car/solar panel chargers and USB charging cables.It can be also used test capacity and electric energy of power bank.
  • 【Latest Upgraded IPS Color Display Screen】: New upgraded version offers 8 IPS main color screen display interfaces,allowing switching the display interface by pressing the key.With the new interface settings,this instrument can monitor voltage,current,capacity,electric quantity,power,load impedance,D/D- voltage and other data of USB.Click the button to switch in multiple interfaces.(Supports flipping the screen to 180 degree, and 3 kinds of personalized interfaces!)
  • 【Test Power Bank Capacity】Before testing the power Bank,please fully charge the power bank,insert the tester and double-click to clear the data,then connect the load or mobile phone (continuous discharge is required).ensure that the discharge voltage is 5V or 9V.(mAh is multiplied by 1.35 when discharge voltage 5V, and mAh is multiplied by 2.45 when discharge voltage is 9V, which is equal to the exact capacity of the battery of the power bank.)
  • 【WIDE RANGE OF APPLICATION】: The USB tester comes with A OTG adapter, supports PD3.0/PD2.0, QC3.0/QC2.0,BC1.2 and USB A or USB C port,supports the updated iPhone 11 Pro mobile phone.(Support iphone 11/X/iPhone Xs quick charging, 29W power, 5V3A / 9V3A / 12V2.5A / 15V2A).Compatible with new MacBook Pro, MacBook, iMac, iMac Pro, Dell XPS, Acer Aspire, HP Spectre, ASUE Zenbook , Lenovo Thinkpad, Eluktronics, Razer Blade Stealth, Chromebook, Microsoft Surface Pro and more Type C devices and chargers
  • 【Important Tips and 18 Month Warranty Service]】:When your device does not have a USB port, you can use an alligator clip to clamp the positive and negative poles and convert to USB before testing. When your USB-C device cannot be tested, please insert a small adapter, the small adapter will start the tester. If you receive a defective USB tester or if you have any questions, please contact us first to obtain a valid warranty replacement service for replacement or other assistance.
Rank No. #2
MakerHawk USB Power Meter Tester, Bluetooth USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter
  • HD display: 1.44 inch HD color Chinese interface HD display; Single-screen monitoring of voltage, current, power, power, temperature, internal resistance and other data during charging; 4 function buttons, 5 common interfaces, 7 kinds of display interfaces, etc. Supports Type-C interface full data transfer compatible PD protocol, Qualcomm QC3.0/4.0 protocol.Please contact with us if you have any confusions!
  • Supports Type-C interface full transmission compatible with PD protocol and Qualcomm QC3.0/4.0 protocol: One table is compatible with multiple protocols for fast charging, supporting multiple protocols such as PD QC2.0 QC3.0/4.0 MTK. Supports 360-degree arbitrary rotation of the screen to meet any angle reading.
  • Notebook Charging Measurement: When the notebook is powered, prepare two Type-C cables, one for connecting the power supply to the watch, and one for connecting the watch to the computer to measure the charging data of the notebook. The notebook can be used to measure high-power notebooks and monitor the aging of the battery. Laptop fast charge effect.Multi-screen interface design, and full help menu, no need to read the instructions.
  • Voltage, current curve - online mobile phone, computer: automatically change the range within 0.00A-3.00A measurement range, real-time display of fluctuations. In addition, you can press the "Next Page" button to switch to the voltage measurement waveform diagram, automatically change the range within the range of 4.5V-24V measurement, real-time display of voltage fluctuations.
  • Note: 1. For Android APP: A: APP only support android 5.0 and above. B: Allow APP to do in the background, not be cleaned. C: Allow APP self-starting. D: Allow APP stay after screen locked, not be cleaned. 2. PC software support PC window(Win 7 and above).
Rank No. #3
Jebsens 4.8A 24W Dual USB Car Charger Volt Meter Car Battery Monitor with LED Voltage & Amps Display
  • HIGH PERFORMANCE DUAL USB CHARGING PORTS - 24W / 4.8A USB Car Charger charges your favorite mobile devices Compatible for iPad (max speed), iPhone XS, XR, 8 Plus (max speed), HTC, Galaxy, MP3 Players, Digital Cameras, PDAs, Mobile Phones.
  • REAL-TIME MONITORING - Concise LED screen displays vehicle’s operating voltage (12V/24V) or the total USB charging output (5V/4.8A Max) in real time, fully controlling the whole charging process. The LEDs are bright enough to read the display without being a distraction while driving.
  • SAFE ON THE GO - Intelligent circuit design protects against short circuiting, over-heating, over-currents, and over-charging. Charging stops when battery is full.
  • COMPACT DESIGN - One of the industry's smallest USB car chargers for added portability, featuring two USB ports and an LED Display make it easy to access after dark. Input: 12-24V; Output: DC 5V 4.8A or 24W (Shared by two ports). One Year Warranty.
  • 12 MONTHS WARRANTY - Comes with 30 days Money Back Guarantee and 12-Months Hassle-free Replacement Warranty.
Rank No. #4
AT34 USB 3.0 Tester Power Meter 30V 4A USB Voltage Digital Multimeter Current Tester Voltmeter Ammeter IPS Color Display Capacity Power
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0,for i Phone 2.4A/2.1A/1A/0.5A, for Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • Power-off storage, data is guaranteed: AT34 has power-off storage function, which can store capacity and energy data when the mobile power is cut off, which is convenient for subsequent viewing and convenient for capacity energy measurement of mobile power.Note: Other USB testers that do not have a power-down storage function cannot test capacity and energy.
  • Measure the quality of the charger: connect the same load, compare the no-load and the load, the greater the voltage drop, the worse the charger capacity is, the worse the quality; the voltage drop is not obvious or the voltage rises (leisure loss) Compensation function) The better the load capacity of this charger, the better the quality.
SaleRank No. #5
AINOPE USB 12V Car Adapter, Cigarette Lighter Voltage Meter 4.8A All Metal Dual Port USB LED Display Car Flush Fit Car Charger Compatible for iPhone X/XS MAX/XR,iPad Mini 3,Galaxy Note 9/S9/S8-Black
  • EFFICIENT CHARGE: Charge two devices simultaneously at full speed with 2.4A in each USB port. With a total power of 4.8A, the charging speed of this car charger is up to 40% faster than 2.1A and 1A charger and works for all USB-powered devices.
  • LED VOLTAGE DISPLAY: Monitor the vehicle's electrical system and alternately display car voltage & current on the screen via soft LED light to keep you informed of the car’s health. Please pay attention when the car voltage is under 12V. (Kindly note: Voltage and current will be displayed when charging the device.)
  • STYLISH APPEARANCE: The full zinc alloy body features scratch resistant, nice in design and long-lasting in use. High quality all metal material let your car charger always look like new. We have black and sliver for your choice, choose one to match the style inside your car.
  • SAFETY GUARANTEE: It has multiple protection against over-current, overcharging and overheating, Ainope car charger with LED display will ensure the safety of your devices.
  • WORRY-FREE SERVICE: Welcome to contact us if you have any questions or concerns. Our reliable Customer Service will be sure to reply within 24 hours and offer proper solutions for you.
Rank No. #6
USB 3.0 Power Meter Tester USB load Digital Multimeter Current Tester Voltage Detector DC 30.00V 4.000A Test Speed of Charger Cables QC 2.0/3.0 AP 2.4A (AT34+Load(FREE delivery))
  • Testers are widely used in the quality inspection of 3C digital peripheral products, and are the first choice for digital gamers and electronic enthusiasts.Real-time detection of the state of charge of the appliance, voltage, current, power and other indicators at a glance; Measuring voltage: 3.7V-30.00V; measuring current: 0-4.000A.
  • The AT34 uses a 0.96-inch IPS high-definition color LCD display to display the state of charge of the appliance, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance. 160 degree wide viewing angle, high brightness and long working life. Fast charge recognition, widely compatible: AT34 supports QC2.0, QC3.0, i Phone 2.4A/2.1A/1A/0.5A, Andriod DCP, fast charge protocol identification, let you know the state of charge of the phone.
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free switching: Using high-precision thermistor sensor; USB 3.0 interface: Compatible with USB 2.0, support high current test, support USB3.0 interface mobile hard disk and U disk test.
  • Package:1 X USB Meter, 1 X USB load ( 5V , 1A or 2A ) , 1 X Quick Tour. We offer User Manual PDF at the product detail page and could be downloaded if needed, 180-days Warranty.
  • Get Manual from forum.avhzy.com
Rank No. #7
Eversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current Voltmeter Amp Volt Ammeter Detector USB Cable Charger Indicator DC3.6-30V/0-5.1A
  • UPGRADED MULTIFUNCTIONAL USB C POWER METER: Detects the charging status and process of your USB-enabled or type c-enabled devices. Supports QC3.0, QC2.0 and BC1.2. A Must Gadget checks the charging performance (charging speed and quality) of the output wall/car/solar panel chargers and USB charging cables. It can be also used to find the highest current of the Wireless Charger, and test capacity and electric energy of power bank.
  • PROFESSIONAL SAFETY GUARD: Featured with over-voltage protection, over-current protection, under-voltage protection, low energy protection and alarm system. This upgraded USB Type C tester can detect safety and maximally protect the appliances from damaging. It will cut off output automatically and alarm by sound, while it will save data when power off suddenly.
  • MULTIPLE COLOR SCREEN DISPLAY MODES: New upgraded version offers 8 LCD main color screen display interfaces, allowing switching the display interface by pressing the key. With the new interface settings, this instrument can monitor voltage, current, capacity, electric quantity, power, load impedance, D+/D- voltage and other data of USB.
  • WIDE RANGE OF APPLICATION: Thanks to the PD protocol quick charging mode measurement technology, this new multimeter supports the updated iPhone X mobile phone. (Support iphone 8 / 8P / iPhone Xs quick charging, 29W power, 5V3A / 9V3A / 12V2.5A / 15V2A). It also can be applied to test other type C devices, Compatible With Galaxy S10/S9/Note 10 +, ChromeBookPixel, OnePlus and More.
  • EVERSAME PROMISE: We have always believed that a stable and continuously improve product quality. We trust our products and we offer worry-free 18-month. For any reason you are unsatisfied with our product, just feel free to contact support for exchange or refund. WHAT WE PROVIDE: 1X USB Tester. (Note: If the USB Tester doesn’t display any parameters, please insert the small adapter being sent with the package into the side hole on the USB Tester, to trigger the PD Charging Function. )
Rank No. #8
Riden USB C Digital Power Meter Tester 3.0, USB Voltage and Current Meter, USB Charger Tester, Multimeter Voltage Tester, Color LCD Display Tester, USB Load
  • [High Definition Display]-The AT35 adopts a 0.96 inch IPS HD color LCD display with a 160-degree wide view, high brightness and long service life. Let you see from any angle to appreciate the color bright, exquisite and natural display picture.
  • [Multiple Data Displayed on One Screen]-Real-time monitoring of voltage/current/power/internal resistance/temperature data when USB power equipment is working, all these data are displayed on one screen; Reat-time control, more secure and reliable!
  • [5-Digit Measurement Resolution]-We increase the product measurement resolution to 5 digit, higher precision, more accurate measurement.
  • [Screen Display Rotate]-The device has a screen rotate function to meet the requirement of various digital devices at any angle.
Rank No. #9
DROK-300043 Digital Multimeter USB 2.0, Multifunctional Electrical Tester, Capacity Voltage, Current Power Meter Detector Reader with Dual USB Ports, LED Display, 7 Modes
  • 7-MODE USB MONITOR ---- voltage measuring range DC 3. 20~30. 0v; current measuring range 0. 00~3. 00A (10A max. ); other measuring parameter: capacitance, power going to your phone/battery pack. With 7 mode, one button to operate.
  • MULTIFUCNTION ---- can be used for capacitance checking, capacitance clear, over voltage and under voltage alarm, over-current, and short circuit alarm, easily test the power/quality of the chargers and USB cables.
  • DUAL USB OUTPUT ---- two USB output available, can be used simultaneously. Output I: be used for device charging and data transfer; output II: only for charging mobile phones, tablet PCS and etc. Output I Support QC 2. 0 9V & 12V charging, but don't insert any device in Output II when using QC 2. 0 Charging.
  • DUAL COLOR LED ---- with red and blue dual bright color LED display, easy to monitor the charge voltage and current of digital USB devices to ensure the optimal charge rate.
  • 100% RISK-FREE SATISFACTION ---- DROK offer you 100% risk-free satisfaction to let you buy with confidence.
SaleRank No. #10
Jebsens 4.8A 24W Dual USB Car Charger Volt Meter Car Battery Monitor with LED Voltage & Amps Display, for iPhone 7 / 6s / Plus, iPad Pro/Air 2 / Mini, Galaxy S7 / S6 / Edge/Plus, Note 5/4
  • ADVANCED CHARGING TECHNOLOGY: Dual USB Ports pumps out 24W of power charge up to 4.8 amps or 2.4 amps per port. Easily charge your favorite mobile devices including the iPad (max speed), iPhone (max speed), iPod, HTC, Galaxy, Blackberry, MP3 Players, Digital Cameras, PDAs, and Mobile Phones.
  • LED DISPLAY - LED digital luminescence tubes; Monitor the voltage of the vehicle's car battery when not charging any devices. When charging a device, it cycles between device's charging current, and the voltage of the vehicle's car battery. The LEDs are bright enough to read the display without being a distraction while driving.
  • OVER-CHARGE PROTECTION – The mini USB car charger is auto power off when input/output is greater than safety current, protects against over-heat, over-current and over-charging
  • COMPACT DESIGN - One of the industry's smallest USB car chargers, featuring two USB ports and an LED Display make it easy to access after dark.
  • PACKAGE INCLUDES: 1 x Jebsens 4.8A Dual USB Car Charger with LED Display. (Charging Cable NOT included) 1 Year Guarantee provided by Manufacturer. Money Back Guarantee from JebsensDirect. Need a Car Mount? Check out the Jebsens New CD Slot Car Mount (ASIN: B01LWNB10F) - Enjoy hands free driving!

Last update on 2021-02-07 / Affiliate links / Product Titles, Images and Descriptions from Amazon Product Advertising API

Top Rated Usb Voltage Monitor to Buy Now

 

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(5) Color

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