Eversame USB Digital Power Meter Tester Multimeter Current and Voltage Monitor, DC 5.1A 30V Amp Voltage Power Meter, Test Speed of Chargers, Cables, Capacity of Power Banks-Black

This product bill received very late and non-mention replacement and not update Amazon return policy I am not satisfy wastage of money

I wanted a real time meter showing voltage, amperage, and wattage all at the same time for/from USB A plug. It's just what I wanted. While the display is small, it's easy to read. And, you have different display layouts via clicking the button while it's in use.

El voltaje que marca es aproximadamente 0.5 volts menor al real. Pero nada más. Todo funciona bien.

Works as advertised and has a much broader measurement range than others I have looked at, bonus feature it can plugged in in either orientation

I'll learn its benefits at useReceived it 2 weeks ago

Have been using for a few weeks now. Very useful gadget once you get the hang of it. Actually dropped mine while it was sticking out of a USB power bank and bent the connector pretty good - gently bent it back in place and still works great.For those of you who (like me) could not find the manual:On the main screen (showing Vol, Cap, Ene, Tme, Cur)- Click and hold to reset all meters- Two clicks will independently reset the mAh meter- Three clicks will independently reset the Wh meter- Four clicks will independently reset the timer- Five clicks (on screen with it visible) lets you configure the countdown timer/cutoff- Six clicks appears to do nothing- Seven clicks will re-zero the ammeter. WARNING: Don't do this with a load plugged in, or your readings will be off - but if you do, just do this again with nothing plugged in. Think of it like the "tare" button on a scale.On the min/max Volts/Amps screens, two clicks increments and three decrements the value.On the "AAA" screen, two clicks will rotate the display - one of my few complaints is that it forgets this setting every time it is powered off!Veified that display works down to ~3v but voltage display never seems to go below 3.10v.