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Customers say
Customers find the USB tester does its job and is good value for money, with one mentioning it paid for itself in just 5 minutes. They appreciate its charging visibility features, with one noting it helped diagnose tablet charging issues. The power measurement and accuracy receive mixed feedback, while the display controls are criticized for not toggling properly. Customers report reliability issues, with one mentioning it gets stuck on the voltage scale 99% of the time.
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55 customers mention functionality, 46 positive, 9 negative
All around Excellent. Works great and you can't beat the price. This has taken my charging out of the dark ages.Read more
Charger Doctor works as advertised; a great little product for displaying the charging speed (current & voltage) & any problems.Read more
It does the job. Of course it has relatively high internal resistance on current meter. Does it matter? Not for me....Read more
The product works perfectly for the purpose I intended which was to enable the maximum coupling from a wirless charger to my phone....Read more
21 customers mention value for money, 20 positive, 1 negative
...It's an inexpensive way to "be sure" when troubleshooting a problem....Read more
For the price of this gadget it's actually worth it to know that your power block or cigarette lighter adapter is putting out the proper amount of...Read more
Good dealRead more
...power consumption, this device does exactly what it promises at a good price....Read more
13 customers mention charging visibility, 10 positive, 3 negative
...volts and amps every 60 seconds or so - shows the power draw on items charging on the USB port - the price was fantastic - would recommend to anyone...Read more
Charger Doctor works as advertised; a great little product for displaying the charging speed (current & voltage) & any problems.Read more
...The voltage reading comes up almost immediately, but the amps stays at zero for a couple cycles through the display....Read more
As other reviewers said, this has a problem with some chargers, as it doesn't auto switch between the V and A modes and it gets stuck on one of them...Read more
17 customers mention power measurement, 9 positive, 8 negative
...It shows you the voltage coming from your charger, and when a device is plugged into it, it also will provide you a reading of the current (amps)...Read more
...It's not very sensitive - it could not detect the power usage of my other USB tester (should be around 20mA) but that one could detect the power...Read more
...It does what it's supposed to do - measure voltage and current. It appears to be accurate since it agrees with the measurement app on my phone....Read more
...This one was defective; it showed exactly double the true current as tested by my other USB "Charger Doctor" and a Fluke multimeter....Read more
7 customers mention accuracy, 4 positive, 3 negative
USB Tester works great and is pretty accurate. Great to have in order to confirm if charger or USB port on a computer is charged and working....Read more
...Thils little unit might not put out an exact reading but for 6 bucks Ill take a ballpark, I can work with that....Read more
Love it! Its very accurate and super convenient to carry around.Read more
...Does it matter? Not for me. It was not meant to be a high precision instrument....Read more
5 customers mention readability, 2 positive, 3 negative
This unit is OK, it can be difficult to position so it can be read. To make that happen you will need to be creative with a swivel USB adapterRead more
The readout is clear - shows volts and amps on items charging on the USB port. The amp value drops to Zero when my device is fully charged....Read more
...This makes it difficult to determine the value that it is trying to display. Now only usable to get a rough idea of the power being drawn.Read more
This item is well made and the readout is clear - cycles between volts and amps every 60 seconds or so - shows the power draw on items charging on...Read more
6 customers mention display controls, 1 positive, 5 negative
...said, this has a problem with some chargers, as it doesn't auto switch between the V and A modes and it gets stuck on one of them...Read more
...But when there is a load connected, the display stays stuck in one mode (either voltage or current) and does not toggle....Read more
...Very infrequently, it seems to not toggle at all and I have to unplug it and then plug it back in.Read more
It works as advertised, however I wish there was a way to manually control the display....Read more
5 customers mention reliability, 1 positive, 4 negative
...as it doesn't auto switch between the V and A modes and it gets stuck on one of them (Voltage, in my case)....Read more
...between the voltage and current scales but mine stays stuck on the voltage scale 99% of the time....Read more
...This one was defective; it showed exactly double the true current as tested by my other USB "Charger Doctor" and a Fluke multimeter....Read more
This thing is awesome. It does the job, it's simple, and you really can't go wrong with it!Read more
