XCLUMA USB Tester 3~30V DC Voltmeter ammeter current voltage power meter capacity monitor

Perfect USB tester with accurate results (+/- 1% accuracy). Chinese menu can be changed as per instructions.Preview available on youtube channel. Type: "gtr tv got the review"

It's not what's advertized . Plus money back option is not available..why to take a cheap quality ,non performing productagain as replacement .?.Amazon should refund ....and state in the product discription that ..buy at your own risk ...refund not allowed ..Even if replacement product is not confirming to the discription ...first one was restricted at 0.8 amps ,second on 1.9 amps , when without the unit ,phone stock charger charges at 5.6 amps ..

This product does what it claims but there are some issues. First the Soldering on the male and female USB interafaces is so weak that everytime you plug this in you are delivering it a dual trauma from both ends. The back lit LED has uneven lighting [I am talking about LED because this product costs three times more that its cheaper variants]. There is one button on this thing which almost does nothing but change one screen and reset. The information on the product detail says TIMING. Let me just clarify that it is nothing but a Time that just starts running when you plug it in or reset, how does this help in any "diagnostics" I have no idea. You cant even stop or freeze the TIME with this unit. It almost has no more features that the cheap and sturdy CHARGER DOCTOR. If you read all the comments of the buyers you can see that this thing has a tendency of breaking down very fast. On the other hand if this device was 500 Bucks cheaper and would have not made all the foolish claims I would have not bothered to right this mean review. I applogise to the people I am offending with my straightforwardness.

The media could not be loaded. Been using it for some days now. One star less due to build quality and lcd display as per price. Serves the purpose of reading the voltage better ho for cheaper ones. Fast charge works with this device. Helped me to identify multiple faulty phone charger and wires by reading the voltage numbers.

good for checking input and output usb power specifictions, like current, voltage, taken capacity, time of charging your device, it has a few display modes, and two languages. Device with button and beeper.

The device functions as per the mentioned specs and is helpful in measuring current, voltage and battery capacity. I use it for checking current and power consumption of microcontrollers that are connected through usb cable.But it may stop working at any point. Once I left it connected to the charger for about an hour or so and then it stopped working -- the lcd went blank. The device has not worked since then.Also talking about price, I think it is highly priced at Rs. 890 and should be lower.

Received this product today, about an hour back. Connected to my oneplus charger to measure voltage and current it supplies to my phone. The screen of this tester just once and before I could connect my phone, screen turned off. Since then it's just not displaying ANYTHING AT ALL.Useless... waste of my money!!!DO NOT BUY!!!

High price otherwise okay product. Has many feature. I tried it upto 29 volts and it works. The the amps reading is about 0.1-0.3 amps high. Need good cable and usb sockets. Otherwise scocket burning problem will be there.