AT35

A handy tester, works as expected with clear and easy to understand display.

I had an issue with my car satnav not charging.Is it the fault the satnav, the cable, the car adapter, something else? Could have been expensive to find out the hard way.This device instantly diagnosed the issue (the power cable). Literally plugged it in between the car adapter and the cable. read 0.56A (way too low). Tried a spare cable (too short to actually use) 1.25A.New low resistance cable on order.

Small and does exactly what it was meant to do

Great value and very useful. Mine had dead pixels so I returned it but I will order another.

When I ordered this, it was to replace a simple "Volts/Amps" meter I've had for a few years, but mislaid. I had a USB charger that looked like it was failing at its job, and wanted to check it out.So the new purchase arrived, in a nice little plastic box, and it kinda blew my mind. First, a gorgeous little colour LCD screen, full of text, flashing fields that were waiting for data input, and more. Even though I have been working in IT all my adult life (since the 80s!!), I had never really "thought" about USB. I had no idea there different charging protocols, voltage and current negotiations between server (charger) and client (device being charged) - and this little baby spelt it out! It actually tells you (on that tiny screen), which charging protocol is in use, alongside voltage, current - oh and those resettable flashing fields - the accumulated charge!Madly in love with this tiny dongle. OH - and sure, it proved my suspect charger was faulty. At best, producing a mere 4.5V, and so, sent to the great Project Box in the Sky.

Incredibly useful. I soon found out which of my mains USB plugs could be trusted for output voltage. It also showed which of my USB cables were worth buying. NOT the plastic coated ones, they were the worst. The nylon ones all worked with little voltage drop, even the 10ft (3 mtrs) ones.The only downside I can see, and it is no faulty of this unit, there seems to be no standard way on any device to mount the socket. This means on some sockets such as wall sockets you sometimes cannot see the display.If your phone is not charging very well / fast this will help you decide the culprit.

I have a number of 3-5 yr old lithium rechargeables I wanted to test for capacity. This device proved accurate but the display for the parameters I was interested in [mAhr and Whr] was very difficult to read due to poor use of digit colour vs. background and small size. I have pretty good close up vision but in the end I had to use a small magnifier.

Useful for checking faulty usb chargers, cables etc...the display is small but does contain plenty of information, including "quick charging" status for phones etc