Portable Digital USB Multimeter DC 3-30V/0-5.1A Ammeter Voltmeter LCD Current Voltage Capacity Watt Time Monitor, Support Quick Charge 2.0&3.0 Fast Charging

I like the amount of info this little USB Multimeter gives you, but what I didn't like (and why I returned it) is that there is no support to keep the usb connector itself from flexing the rest of the housing.Mine twisted and stayed bent after only the 5th use when plugging it into a new charger brick that was a tight fit and it just felt extremely flimsy.If they could strengthen the case and make the USB plug a little more solid, then I would certainly buy it again.

Seems to work exactly as advertised. It's hard to believe that the cost of this unit is as cheap as it is.A must to have if you own several different USB chargers and you want to know which ones can be thrown away because they are garbage and others that perform very well.

This is simple to use. I have used this to check all my USB chargers and to identify charging cables that limit the charge current. The end that plugs into the charger will go in backward or frontward so the indicator is always facing you.

Nice little gadget but did not come with any "User's Manual".

I've tried it on a few different batteries. It is very useful to see the battery capacity and their charging current. No need to blindly trust what the battery labels say any more!

not easy to use, confused. It measure the flow of current of the amp not the actual charger capacity

Keeps turning on and off beeping saying welcome over and over. Company sent me a working unit after receiving a defective one got here ina few days it was really fast

It does fast charging but Resets every couple seconds :/ cant use on smart devices