20 Best Multimeter With Usb Output [2024]

Are you looking for the best multimeter with usb output? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling multimeter with usb output.

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# Preview Product
1 HOMERN USB Tester,Charger Doctor Digital Multimeter Current Voltage Detector,Battery Monitor with... HOMERN USB Tester,Charger Doctor Digital Multimeter Current Voltage Detector,Battery Monitor with...
2 USB Power Meter Testers, Electop Upgrade Multi Functional 2 in 1 Type C USB Tester, LCD Digital... USB Power Meter Testers, Electop Upgrade Multi Functional 2 in 1 Type C USB Tester, LCD Digital...
3 DROK USB Tester, USB-A 2.0 Digital Multimeter Dual USB Output Ports PD QC 3.0 Protocol with Color... DROK USB Tester, USB-A 2.0 Digital Multimeter Dual USB Output Ports PD QC 3.0 Protocol with Color...
4 MakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power... MakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power...
5 USB Meter X-DRAGON Digital Multimeter USB 2.0,Multifunctional Electrical Tester Capacity Voltage,... USB Meter X-DRAGON Digital Multimeter USB 2.0,Multifunctional Electrical Tester Capacity Voltage,...
6 BTMETER BT-90EPC Digital Multimeter, Auto-Ranging AC/DC Volt Amp Ohm Temperature Electric... BTMETER BT-90EPC Digital Multimeter, Auto-Ranging AC/DC Volt Amp Ohm Temperature Electric...
7 Diymore USB Charger Doctor Current Voltage Charging Detector Battery Voltmeter Ammeter Multimeter... Diymore USB Charger Doctor Current Voltage Charging Detector Battery Voltmeter Ammeter Multimeter...
8 USB Digital Power Meter Tester,Tohilkel Safety Tester Multimeter Current and Voltage Monitor, DC... USB Digital Power Meter Tester,Tohilkel Safety Tester Multimeter Current and Voltage Monitor, DC...
9 UM34C USB 3.0 Multimeter USB Bluetooth Voltmeter Ammeter and USB Electronic Load Tester Resistor USB... UM34C USB 3.0 Multimeter USB Bluetooth Voltmeter Ammeter and USB Electronic Load Tester Resistor...
10 HonsCreat USB Digital Power Meter Tester Multimeter Current and Voltage Monitor, DC 5.0A 30V Amp... HonsCreat USB Digital Power Meter Tester Multimeter Current and Voltage Monitor, DC 5.0A 30V Amp...
11 DROK USB 3.0 Hub Protector Multi Tester, OLED Screen Pocket Digital Multimeter, DC Voltmeter Ammeter... DROK USB 3.0 Hub Protector Multi Tester, OLED Screen Pocket Digital Multimeter, DC Voltmeter...
12 Amazon Basics USB Type-C to USB Type-C 3.1 Gen1 Adapter Charger Cable - 3 Feet (0.9 Meters) - White Amazon Basics USB Type-C to USB Type-C 3.1 Gen1 Adapter Charger Cable - 3 Feet (0.9 Meters) - White
13 Eversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current... Eversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current...
14 AstroAI Digital Multimeter TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately... AstroAI Digital Multimeter TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately...
15 USB C Tester, 3 in 1 Type C DC5.5 USB Meter USB Load Color Screen IPS Digital... USB C Tester, 3 in 1 Type C DC5.5 USB Meter USB Load Color Screen IPS Digital...
16 Plusivo Digital T-RMS 6000 Counts, Multimeter, Non Contact Voltage Tester, Auto-ranging, Measures... Plusivo Digital T-RMS 6000 Counts, Multimeter, Non Contact Voltage Tester, Auto-ranging, Measures...
17 USB 3.0 Power Meter Tester Digital Multimeter Current Tester Voltage Detector DC 30.00V 4.000A Test... USB 3.0 Power Meter Tester Digital Multimeter Current Tester Voltage Detector DC 30.00V 4.000A...
18 Crenova MS8233D Auto-Ranging Digital Multimeter Voltmeter Ohm Volt Amp Tester with Backlight LCD... Crenova MS8233D Auto-Ranging Digital Multimeter Voltmeter Ohm Volt Amp Tester with Backlight LCD...
19 USB C Power Meter Tester, Eversame USB Voltmeter Ammeter Load Tester,USB Voltage and Current Monitor... USB C Power Meter Tester, Eversame USB Voltmeter Ammeter Load Tester,USB Voltage and Current...
20 USB Tester Type C Meter - USB Digital Multimeter Amperage Power Capacity Reader & USB C Current... USB Tester Type C Meter - USB Digital Multimeter Amperage Power Capacity Reader & USB C Current...
SaleBestseller No. 1
HOMERN USB Tester,Charger Doctor Digital Multimeter Current Voltage Detector,Battery Monitor with...
  • A simple little diagnostic tool.Functions well to monitor battery charging status. Shows volts supplied and amps drawn. Answered a few questions of...
  • Great little digital multimeter for testing voltage/amps output and power draw for usb-driven devices. Easy to read, helps identify which chargers put...
  • This foolproof usb meter has been a real benefit in sorting phones, cables and wall warts adapters into how well they are working for each of these...
  • A very handy USB power monitor to have around for checking both Vdc and the current a USB device would draw with re-charging and go to zero when fully...
  • Unlike other USB multimeter, which displays voltage and current in alternate mode and you have to wait for the other mode. This device displays both...
SaleBestseller No. 2
USB Power Meter Testers, Electop Upgrade Multi Functional 2 in 1 Type C USB Tester, LCD Digital...
  • Multi Functional Tester: Multiple interfaces (USB input/output, Type-C input/output and Micro USB input),Used to detects the charging status and...
  • Safety Protection: Featured with Over-voltage protection, Over-current protection, under-voltage protection, low energy protection and alarm system....
  • LCD Multi-color Display : Upgraded version offers IPS HD 9 LCD main color screen display interfaces, allowing switching the display interface by...
  • Support PD protocol:Thanks to the PD protocol quick charging mode measurement technology, this new multimeter supports the updated iPhone X mobile...
  • OTG Adapter for Free : It comes with a OTG adapter,which enables you to expand your USB and Micro USB Function.(convert USB input connection port to...
Bestseller No. 3
DROK USB Tester, USB-A 2.0 Digital Multimeter Dual USB Output Ports PD QC 3.0 Protocol with Color...
  • 【7 Modes Display Monitor】 DROK USB Tester is equipped with digital color LED display screen, which can be switched between 7 display modes. This...
  • 【Dual USB Output】 This item is equipped with USB-A input and dual USB 2.0 output. The output ports support PD QC 3.0 fast charge protocol. This...
  • 【Multifunction】 DROK USB detector can be used for capacity checking, capacity clear, over voltage, under voltage, over current and short circuit...
  • 【Easy to Use】 The multimeter only has one button. Once you plug in the meter, you can test the parameter you want. The button can switch 7 modes...
  • 【Application】 DROK USB Meter can be used for the devices between 3.2-30V and 0-5A. You can use this for 5V 9V 12V 24V 30V solar panel, power bank,...
SaleBestseller No. 4
MakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power...
  • Guide description link, The Video of Changing Language Link and PC software installation instruction and PC software and Android APP Download Link:...
  • 【Wide range of applications】: Can measure various USB chargers/PC/Laptop/Desktop Computer/Mobile Phone/Power Bank/Charger/Discharge Load/Car...
  • 【Flexible color display interface】: Support screen 360 degree rotation to meet any angle reading You can rotate the screen by pressing the button...
  • 【 Beautiful design】: 1.44'' LCD display with screen display rotating function design; 4 operating buttons and 5 connected ports. Plug robust...
  • 【Strong After-sales Service Team】: As long as you have any questions about the product, we will resolve your issue immediately if received your...
Bestseller No. 5
USB Meter X-DRAGON Digital Multimeter USB 2.0,Multifunctional Electrical Tester Capacity Voltage,...
  • ❤️7 Modes Monitor: The USB monitor can display voltage, current, capacitance and power, press the button to switch among seven different display...
  • ❤️Measuring Range: Voltage 3.2-15V Current 0-3A Accuracy: +/- 1%
  • ❤️Dual ouput: Output one is used for both charging and data transfer, Output two is for large current fast charging
  • ❤️Display: Simultaneously displaying of Amp and Volt in real-time
  • ❤️Widely used: Perfect for testing how fast a USB cable or USB power charger, such as power bank, solar charger
Bestseller No. 6
BTMETER BT-90EPC Digital Multimeter, Auto-Ranging AC/DC Volt Amp Ohm Temperature Electric...
  • 【Datalogging Digital Multimeter】This voltmeter can connect with a computer via USB cable using the software included in the CD Allows you to...
  • 【Multifunctional PC Link DMM】Data-recording multi-meter measures AC/DC Voltage, AC/DC Current, resistance, frequency, capacitance, temperature,...
  • 【Auto-Backlight & Auto Shutdown】Built with a light sensor to sense the ambient brigtness, turn ON/OFF backlit screen automatically, no more...
  • 【Attached to Clamp-on Amp Probe】It’s more convenient to attach the BT-90EPC meter to BT-605A AC/DC Amp Clamp Probe for amps measurement....
Bestseller No. 7
Diymore USB Charger Doctor Current Voltage Charging Detector Battery Voltmeter Ammeter Multimeter...
  • The tester uses a new generation of power four semi~ double loop integral converter IC , with a precision bandgap reference , range accuracy , high...
  • High temperature can be used for measuring USB powered or power consumption of the interface , mobile phone charger , U disk and other products.
  • Can easily measure the operating current of the output voltage of the USB port and equipment.
  • Smallsize , no power , and other ancillary equipment, plug and play also detect USB charger output voltage and current are standard suitable for...
  • USB powered devices can be used to measure air , voltage loads , USB terminal equipment working voltage and current .
Bestseller No. 8
USB Digital Power Meter Tester,Tohilkel Safety Tester Multimeter Current and Voltage Monitor, DC...
  • MULTIFUNCTIONAL USB TESTER: USB Meter Tester is mainly used to detect USB charging current, voltage, discharge capacity, quantity of electric charge,...
  • SECURITY GUARANTEE: Built-in CW3002D chip, use indoor intelligent system, Supports QC 2.0 / 3.0 high voltage test, too low and too high voltage...
  • WIDE APPLICATION: The handy USB tester can be applied to many electric devices, such as mobile phone, portable power bank, tablets, pad, camera....
  • WIDE TESTING RANGE & SIMPLE OPERATION:Input/Output Voltage: DC3-30V, Current Range: 0-5.1A. This portable USB tester is easy to carry and enables...
  • Any questions contact [email protected]'ll be solve online at the first time.
Bestseller No. 9
UM34C USB 3.0 Multimeter USB Bluetooth Voltmeter Ammeter and USB Electronic Load Tester Resistor USB...
  • UM34C Android Phone APP Control.No need professionalwiring,simply the operation,only need to download APP.Real detect charging status of USB power...
  • There are some incompatibility problem between some android phone and our bluetooth board, Please purchase carefully, it compatible with Samsung NOTE8...
  • Note: LD25 USB Electronic Load Tester is not reverse polarity protection, the input polarity can not be reversed, otherwise the product is permanently...
  • LD25 4-bit led digital display tester have some Advantage:1.Display upgrade;2.Protection upgrade;3.Interface upgrade;4.Cooling upgrade;5.Precision...
Bestseller No. 10
HonsCreat USB Digital Power Meter Tester Multimeter Current and Voltage Monitor, DC 5.0A 30V Amp...
  • 【Wide Testing Range & Simple Operation】:Input/Output Voltage: DC4-30V, Current Range: 0-5A. This portable USB tester is easy to carry and...
  • 【Regular Power Off】: When it's showing 00:00H on screen, press and hold the button for about 3 seconds and there will be flashing numbers. Press...
  • 【Over Current Protection】: When it's showing 0.00A on screen, press and hold the button for about 3 seconds and there will be flashing numbers....
  • 【Premium LCD Display】: Crafted from high-grade LCD monitor with low power consumption feature, bright and clear enough to monitor the parameters...
  • 【Package】: 1X Multimeter USB Tester.One year warranty best service !
Bestseller No. 11
DROK USB 3.0 Hub Protector Multi Tester, OLED Screen Pocket Digital Multimeter, DC Voltmeter Ammeter...
  • Not only a Multimeter but also a protector: our drop USB digital meter is a practical test tool that can be used to measuring Voltage current...
  • Multiple protections, Intelligent and safe: this ideal USB multiple detector owns over-voltage, under-voltage, over-current, under-current and...
  • Effortless operation: this pocket USB digital Multimeter achieve one button operation you can easily rotate the screen, switch capacity unit/data set,...
  • Clear OLED display, low power consumption: drok USB monitor adopts 0 91″ high quality OLED display, which has advantages of high Brightness, high...
  • Hurry to get yours: we offer you 100 percent risk-free satisfaction guarantee to let you buy with confidence this excellent drok USB pocket USB...
Bestseller No. 12
Amazon Basics USB Type-C to USB Type-C 3.1 Gen1 Adapter Charger Cable - 3 Feet (0.9 Meters) - White
  • IN THE BOX: (1) 3 foot USB Type-C to USB Type-C 3.1 gen adapter charger cable
  • WIDE COMPATIBILITY: Connect USB Type-C enabled devices (MacBook, Chromebook Pixel, Galaxy Note 7 etc.) with standard USB Type-C 3.1 or 3.0 enabled...
  • FAST CHARGE & SYNC: Ideal for charging and powering USB Type-C enabled devices, as well as syncing data, photos and music; Up to 5 Gbps data transfer...
  • REVERSIBLE DESIGN: Easily insert the connector into any Type-C enabled device (does not matter which side is up)
  • COMPACT DESIGN: Type-C port is half the width and one-third the height of a standard USB-A connector (slightly larger compared to Lightning or...
SaleBestseller No. 13
Eversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current...
  • UPGRADED MULTIFUNCTIONAL USB C POWER METER: Detects the charging status and process of your USB-enabled or type c-enabled devices. Supports QC3.0,...
  • PROFESSIONAL SAFETY GUARD: Featured with over-voltage protection, over-current protection, under-voltage protection, low energy protection and alarm...
  • MULTIPLE COLOR SCREEN DISPLAY MODES: New upgraded version offers 8 LCD main color screen display interfaces, allowing switching the display interface...
  • WIDE RANGE OF APPLICATION: Thanks to the PD protocol quick charging mode measurement technology, this new multimeter supports the updated iPhone X...
  • EVERSAME PROMISE: We have always believed that a stable and continuously improve product quality. We trust our products and we offer worry-free...
SaleBestseller No. 14
AstroAI Digital Multimeter TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately...
  • Versatile Digital Multimeter - Accurately measures AC/DC Current, AC/DC Voltage, Capacitance, Frequency, Duty Cycle, Resistance, Diode, Continuity and...
  • Thoughtful Design - Support Data Hold, Large LCD Backlit Screen, Auto Shut-off and Hanging Magnet, and Kickstand make the process of measurements...
  • Suitable For Many Occasions - This Multimeter is a golden partner to help to troubleshoot a variety of automotive and household electrical problems...
  • Ensure Safety - Double ceramic fuse is anti-burn and protects from overloading,and it will be more secure and reliable; F400mA/600V and F10A/600V...
  • Additional Tips - Combined with Amazon's superior delivery, we provide lifetime technical support. ( Note: Please take off the cap before using the...
Bestseller No. 15
USB C Tester, 3 in 1 Type C DC5.5 USB Meter USB Load Color Screen IPS Digital...
  • High PrColor screen - 8 interfaces - Support USB, Type-C, DC5.5, micro USB. It can measure the voltage and current changes during the...
  • Wide Applications:With the USB tester, you are able to test notebooks, car emergency power supplies, routers and other DC products, monitoring...
  • The tester and mobile phone enable to realize APP. And charging status, various measurement data & graph can be transmitted and viewed on your phone....
  • Multi Functions:Functions include screen flip, fast charge recognition, energy capacity detection, temperature measurement, accuracy measurement,...
  • Safety Protection:Featured with over-voltage protection, over-current protection, low-voltage protection, charging time setting and auto-off...
Bestseller No. 16
Plusivo Digital T-RMS 6000 Counts, Multimeter, Non Contact Voltage Tester, Auto-ranging, Measures...
  • True-RMS Multi -Function Clampmeter: easy to use and operate; can accurately measure AC current, test AC and DC voltage, Low impedance, serve as...
  • NCV or Non Contact Voltage Detector: it can detect conductor with a voltage higher than 90V AC without touching any wires; NCV sensor is at the tip of...
  • LCD display with backlight, data hold function, low battery detector, overload protection, auto power off after 15 minutes, etc; meets IEC safety...
  • Test probes (2 types), thermocouple, test clips, dupont wire probes, crocodile clips, mini crocodile cable, mini wire stripper tool, mini...
  • With durable carrying bag; Satisfaction guarantee: 30-day manufacturer guarantee and lifetime customer support
Bestseller No. 17
USB 3.0 Power Meter Tester Digital Multimeter Current Tester Voltage Detector DC 30.00V 4.000A Test...
  • Testers are widely used in the quality inspection of 3C digital peripheral products, and are the first choice for digital gamers and electronic...
  • 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,...
  • 4-bit accuracy for more accurate measurements; Measure the load equivalent impedance and power; Thermometer function, Celsius and Fahrenheit free...
  • 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...
Bestseller No. 18
Crenova MS8233D Auto-Ranging Digital Multimeter Voltmeter Ohm Volt Amp Tester with Backlight LCD...
  • 【100% Safety Assurance】Built-in Double Fuse. Overload Protection on all ranges.
  • 【Auto-ranging Tester】Accurately measure AC/DC voltage, AC/DC current, resistance, frequency, continuity, diode, etc.
  • 【Backlight Display】 Designed with 3 1/2 digit LCD display and 'Backlight', showing the reading clearly in low light areas.
  • 【Special Points】 Data Hold, Maximum Value Hold, Function Switching, Auto Power OFF. Sampling Speed: 3 times per second.
  • 【9V Battery】DON'T forget to install the 9V battery before using the digital multimeter, or it will go on strike.
SaleBestseller No. 19
USB C Power Meter Tester, Eversame USB Voltmeter Ammeter Load Tester,USB Voltage and Current Monitor...
  • 【MULTIFUNCTIONAL TOOL】: Support quick charger recognition; data wire resistance value testing; QC2.0/QC3.0, Voltage/Current/Power Detection; data...
  • 【WIDE RANGE APPILCATION】: Widely used in the quality inspection of digital devices with Micro USB and Type C peripheral. Great for testing and...
  • 【BRIGHT COLOR DISPLAY INTERFACE】: 1. Measurement Main Interface 2. Quick Charge Identification Interface 3. Data Recording Interface 4. Wire Group...
  • 【UNBEATABLE DESIGN】: 1.44'' LCD display with screen display rotating function design; 4 operating buttons and 5 connected ports. Plug robust...
  • Important Warm Reminder: The bundle contains a single-sided protocol design USB Tester (no Bluetooth) and a reversible 50cm ultra-durable nylon...
Bestseller No. 20
USB Tester Type C Meter - USB Digital Multimeter Amperage Power Capacity Reader & USB C Current...
  • USB Color Display Tester can monitor Voltage, Current, Capacity, Electric Quanity, Power,Temperature,Load Impedance, D+/D- Voltage, Charging Time and...
  • 1.USB-C male head replacement cost of copper pin contact plug better, tighter current data more reliable. 2.The screen 180 degrees flip display...
  • 4.The interface settings such as overvoltage, low voltage, overcurrent, backlight time, etc., and switch to the corresponding interface at the short...
  • 7. the built-in PD protocol can open the Type-C interface with the PD protocol's intelligent charger unloaded power output display, so as to...
  • Note: 1. This is no communication version. 2. PC software support PC window(Win 7 and above) and Android Phone(Android 5.0 and above, support 12 kinds...

Having trouble finding a great multimeter with usb output?

This problem is well understood by us because we have gone through the entire multimeter with usb output research process ourselves, which is why we have put together a comprehensive list of the best multimeter with usb outputs available in the market today.

After hours of searching and using all the models on the market, we have found the best multimeter with usb output for 2023. See our ranking below!

How Do You Buy The Best Multimeter With Usb Output?

Do you get stressed out thinking about shopping for a great multimeter with usb output? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching multimeter with usb output, which is why we have assembled a comprehensive list of the greatest multimeter with usb output available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for multimeter with usb output that you consider buying. Your questions might include the following:

  • Is it worth buying an multimeter with usb output?
  • What benefits are there with buying an multimeter with usb output?
  • What factors deserve consideration when shopping for an effective multimeter with usb output?
  • Why is it crucial to invest in any multimeter with usb output, much less the best one?
  • Which multimeter with usb output are good in the current market?
  • Where can you find information like this about multimeter with usb output?

We’re convinced that you likely have far more questions than just these regarding multimeter with usb output, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for multimeter with usb output, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible multimeter with usb output. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an multimeter with usb output buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available multimeter with usb output currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of multimeter with usb output has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an multimeter with usb output?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your multimeter with usb output.
  5. Customer Ratings: Number ratings grade multimeter with usb output objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their multimeter with usb output.
  7. Product Quality: You don’t always get what you pay for with an multimeter with usb output, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an multimeter with usb output is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining multimeter with usb output information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding multimeter with usb output is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

Related Post:

FAQ:

Q: What is the best USB power meter to buy?

A: The Best all-round USB meter is the Drok OLED ($15). Without a doubt, this is the best meter of the bunch. It also costs the most, too. It slips right in-line with your USB port and offers a very clear and detailed read-out of voltage, current, power, and mAh.

Q: What is the best multimeter for home use?

A: Through weeks of testing, the AstroAI 6000 earns its spot as our all-around favorite multimeter. Compared to other premium products, this model combines an impressive set of both AC and DC measurement capabilities in a convenient and affordable package.

Q: What is the best USB tester?

A: There are many manufactures out there making quality USB meters, multimeters, or tester. I find the following amazing. The best USB tester that professionals recommend is either the RD AT35 or RD TC64, or the Klein Tool ET920.

Q: What is a USB meter and how to use it?

A: Any USB meter, or whatever, is capable of checking the voltages across the USB port, current from the port to load, and sometimes even gives you the capacity measure in mAh. If these are the things you are looking for and just need a solid recommendation list of the best USB meters or testers, then this article will be helpful to you.