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Klein Tools ET920 USB Power Meter, USB-A and USB-C Digital Meter for Voltage, Current, Capacity, Energy and Resistance

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Availability: In Stock.
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Arrives Thursday, Apr 23
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Pattern Name: Electric Circuit Testing Device


Style: USB-A and USB-C Meter


Features

  • VERSATILE USB TESTING: Test voltage from 3 to 20V DC and current from 0.05 to 3A (USB-A) and current from 0.05 to 5A (USB-C), covering most common standard USB ports, including Qualcomm Quick Charge ports
  • EXTENSIVE MONITORING: Continuously monitor voltage, current, capacity/charge delivered, energy, and resistance (calculated) for up to 1000 hours, providing comprehensive data insights
  • CONVENIENT DATA STORAGE: Store and recall up to 10 readings, allowing easy access to previous measurements for comparison and analysis
  • OVERLOAD DETECTION: Detect voltage and current overload, ensuring the safety and protection of your devices and power sources during testing
  • HIGH-RESOLUTION LCD: The hi-resolution LCD provides clear visibility of measurements, even in environments with low ambient lighting, ensuring easy reading of data
  • EASY SETUP: Simply connect the device in line between the source being measured and the power source for seamless and accurate measurements
  • RUGGED DESIGN: Durable, pocket-sized and light weight design with 6.6 ft. (2 m) drop protection stands up to jobsite demands

Description

The Klein Tools ET920 is a USB digital meter for Type-A and Type-C ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can function with any USB-A and most USB-C ports, including Qualcomm Quick Charge ports that have the ability to deliver power. It requires NO batteries as it draws power from the power source to function. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Brand: KLEIN TOOLS


Power Source: Usb-port Powered


Style: USB-A and USB-C Meter


Color: Orange


Item Weight: 1.7 Ounces


Brand: ‎KLEIN TOOLS


Power Source: ‎Usb-port Powered


Style: ‎USB-A and USB-C Meter


Color: ‎Orange


Item Weight: ‎1.7 Ounces


Item dimensions L x W x H: ‎9.04 x 1.95 x 0.53 inches


Min. Operating Voltage: ‎3 Volts (DC)


Specification Met: ‎Meets Relevant Industry Standards


Upper Temperature Rating: ‎60 Degrees Celsius


Measurement Type: ‎USB Power Meter


UPC: ‎092644691669


Manufacturer: ‎Klein Tools


Global Trade Identification Number: ‎69


Product Dimensions: ‎9.04 x 1.95 x 0.53 inches


Item Weight: ‎1.7 ounces


Department: ‎Unisex-Adult


Item model number: ‎ET920


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎August 29, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great tool for testing.
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
Great tool to capture usb data and help diagnose power issues from usb.
Reviewed in the United States on February 22, 2026 by Greg S.

  • Works well!
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
I bought this unit as I was curious as to exactly how much power various USB devices actually require... things like WYZE cameras, cell phones when charging, etc. The unit did not disappoint, it provided me with all the info I needed.
Reviewed in the United States on February 5, 2026 by RocketRoberts

  • Very useful meter
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
Great meter. Very useful to assess charge rates etc.. “Input” and “Output” are clearly marked, but i wish it could be used in both directions. The “Input” is the male cable so it can only connect to a voltage source that has a female plug. If the source has a built-in male USB cable, then this wont work without an adapter. Also you can’t mix USB sources - like USB-C input to USB-A output. There are adapter cables to solve these problems, but it would be really useful if the meter had this flexibility. Overall, I”m very happy with it. ... show more
Reviewed in the United States on February 3, 2026 by Chuck

  • Versatile USB Power Meter: Accurate Measurements with Enhanced Features, but with One Minor Quirk
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
This USB power meter is very versatile, allowing me to test voltage and current in USB connections. It can measure voltage from 3 to 20V DC and current from 0.05 to 3A (USB-A) or 0.05 to 5A (USB-C). This wide range covers most standard USB ports, including Qualcomm Quick Charge ports. With it, I can measure and display important information such as USB port voltage, current, capacity, energy, and resistance, providing valuable insight into my USB power usage on various devices. My only minor gripe is that the meter instantly shuts off after a low current draw or power cycle, rather than retaining the data. It would be more convenient if it saved the last reading for a short period. It's important to note that USB Type-C connections operate with efficiency and safety in mind, meaning that the charger will only supply power when it detects a device connected to the other end. If no device is connected, the power meter will not power up as it doesn't receive any power from the charger. This feature prevents unnecessary power wastage and reduces potential electrical hazards. --- Product: Klein Tools ET920 USB Power Meter, USB-A and USB-C Digital Meter for Voltage, Current, Capacity, Energy and Resistance ASIN: B07GXZHPVR ... show more
Reviewed in the United States on October 19, 2023 by Sam Fisher

  • Small, but works
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
Simple, easy to use
Reviewed in the United States on March 8, 2026 by Jack Nolan

  • Excellent design with a couple of leads for USB-A and USB-C, bright backlight
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
Absolutely terrific, was able to measure a couple of USB-C wall chargers that were not rated as specified! Saved me a ton of $$s already. Thank you to the other reviewers who pointed out that the USB-C needs to have load on it prior to connecting the input to the power providing charger. USB-A is automatic. In any case, works well. The only thing I would ask is if it can also provide Watts on the display! (it does provide mAH and wH, for watts, have to just multiply Volts x Amps). A bit expensive, but well worth the ease of use. Highly recommend. ... show more
Reviewed in the United States on October 16, 2023 by curiousmetoo

  • works great, USB-C and USB-A all work good, saves time, easy to use
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
the Klein Tools ET920 USB Power Meter, USB-C and USB-A Digital Meter for Voltage, Current, watts, resistance all work great, just plug it in look at the screen, very easy to use. the graphics are not great but work with no problems, so many review say the USB-C does not work, the USB-C will not work on apple dc power USB-C device do to apple non standard USB-C dc power wiring the klein meter will not work, also the meter has usb input and output that must be correct or meter will not work properly. USB-C works fine with the standard USB-C DC Power wiring. Film and TV Engineering for 25 years. ... show more
Reviewed in the United States on December 8, 2023 by Be Happy Be Happy

  • Well built (Vietnam) and accurate tool
Pattern Name: Electric Circuit Testing Device Style: USB-A and USB-C Meter
One of the better USB testers on the market
Reviewed in the United States on January 8, 2026 by Steve Graham

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