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  • How are reviewers describing this item?
    port, great, easy, good and useful.
  • Our engine has profiled the reviewer patterns and has determined that there may be deception involved.
  • Our engine has determined that the review content quality is low.
  • Our engine has analyzed and discovered that 67.7% of the reviews are reliable.
  • This product had a total of 508 reviews as of our last analysis date on Jul 16 2020.


Most positive reviewquestion

Love being able to see what my 5V Solar panels are putting out.

Least positive reviewquestion

Not enough review data to provide meaningful insight.

Most authentic reviewquestion

Works as expected, providing data as to available voltage and actual current flow into a USB device. Particularly useful if you...  Read More

Least authentic reviewquestion

Works great, bought it to test a power brick battery with two usb ports. One is 1.0 amps the other is 2.0 amps. You can do this...  Read More

Helpful Insights


    Posted by a reviewer on Amazon

    And before a major problem like a potential fire or damaged tablet battery 2.

    Posted by a reviewer on Amazon

    No maximum output was 5.

    Posted by a reviewer on Amazon

    As it turned out the seller was aware of product not as advertised but how would you know without this product.

    Posted by a reviewer on Amazon

    Or if a usb adapter is drawing electricity when nothing is plugged in.

    Posted by a reviewer on Amazon

    You can do this type of test on any usb port.

    Posted by a reviewer on Amazon

    Simply plug this in to the port, then attach the device to this.

    Posted by a reviewer on Amazon

    One is set up to charge a device only, and blocks anything from attempting to download or read anything stored on the device.

Review Count History
Price History