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USB 3-in-1 Voltage/Current/Capacity Meter

USB 3-in-1 Voltage/Current/Capacity Meter

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TTS PRICE: $14.99


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This little guy is worth his weight in gold! Ever had to troubleshoot power issues with a USB device? Ever wanted to charge your tablet and weren't sure you had the right USB adapter? How about the ability to see exactly how much current a device is drawing from your USB port? This compact USB tester is the tool you've been looking for.

The V20 has a USB A Plug on one end and a USB A Jack on the other. Simply add it inline with your USB device and let the brilliant OLED display answer all of your USB power related questions. The display shows three valuable readings; USB Voltage, Current being drawn by your USB device, and Capacity. Lastly in the upper right hand corner the device shows you the time connected.

At this low price, why not buy three! Once you have one of these guys you will want one in your tool bag, laptop bag, your home desk drawer, and anywhere you utilize USB as a power source. Click here to check out our 3-Pack.

  • UPDATED 12/13/2016 - COLOR: Gray
  • Voltage Range: 3V-9V
  • Current Range: 0-3A
  • Accuracy: 1%
  • Time: 0-99 Hours
  • USB Compatibility: USB 2.0 and USB 3.0 (works at 2.0 Speeds)
  • Dimensions: 2.75in x .91in x .59in (70mm x 23mm x 15mm)
  • Weight: .53oz
  • Sampling Resistance: 50mΩ
  • Measurable Capacity Range: 0-99,999mAh
  • Current Consumption: <12mA
  • Display Type: 1.04in OLED Screen
  • Display Color: White
  • Designed By: Keweisi
  • Quantity Included: 1
    Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 15 WRITE A REVIEW

      So far, this Product Review was helpful to 0 TTS Customers.
    5 of 5 An inexpensive but useful diagnostic tool February 4, 2020
    Reviewer: Robert Freedman from CHESHIRE, CT United States  
    Great little tool to have in your "bag of tricks" for go - no go for chargers, ports and charge cells.
    Not only shows the USB source voltage, it gives you and idea of the current draw and capacity. Tested against our lab DMM the measured voltage was accurate with in reason. The monochrome OLED display is really easy to read, even in modest ambient lighting situations.

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      So far, this Product Review was helpful to 0 TTS Customers.
    5 of 5 Handy trouble shooting tool October 8, 2019
    Reviewer: Brian Muirhead from Granbury , TX United States  
    Works under a load. Provides volts, load and current.

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      So far, this Product Review was helpful to 0 TTS Customers.
    5 of 5 review of USB Tester December 10, 2018
    Reviewer: james B. from Glasgow, KY United States  
    I like all the features of the USB Tester it tells me if the voltage Amps and the milliamp hours and the time length of the test has an easy reset it does all I need it to would purchase again if ever needed

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      So far, this Product Review was helpful to 0 TTS Customers.
    5 of 5 tester February 7, 2018
    Reviewer: Tim Kinney from Mt Pleasant , SC United States  
    works well. can give you an idea if your devices are getting enough power to charge them

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      So far, this Product Review was helpful to 0 TTS Customers.
    3 of 5 Inaccurate February 6, 2018
    Reviewer: Jeff from Tucson, AZ United States  
    I have connected this device and three others (all different models) in series and observed that only this device reported the voltage being unstable by up to .2V it also showed a 30% difference in total mAH power.  On the good side it does display time which is very valuable.  As a quantative measurement tool it is of little value but it does have great value if you want to observe a batterys capacity over multiple charge cycles.

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