USB “Charger Doctor”

Just a quick post today, received this in the mail from China today. A USB voltage and current tester for a whole $2

Nice simple setup plug one end into a USB port and connect the device you want to the other end and the display changes back and forth from current to voltage every few seconds.

Measures 3.5-7V and 0-3A.

Lets connect it up:

Unloaded USB port voltage.
4.91v
4GB USB stick connected.
0.08amp.
Connect to a USB 2.5″ HDD. 0.45amp

Nice simple device that does what it says on the box and quite useful for diagnosing USB devices, well worth the $2 to have around for the odd time you even just want to know how much current you’re getting out of a charger.

 

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