Description

If you are wondering about your charging rate on your devices then I wouldn't hesitate to recommend you this usb power meter tester.
This is a tool that anyone should have. You will be able to find if a cable or power supply is damaged, or if the cable allows the proper charge to be delivered to the device, and what is the capacity in the power banks
Features:
Displays all the expected data, useful for checking power transformers and charge cables
Great tool to:
to define a defective or low capacity cable;to test output on solar chargers

To reset the Tester to show Amperage:
.Hold the button for a few seconds
.Press twice to go to view mode, and once more each time you want to go to a different saved number. Twice to exit view mode and enter what you are looking at

To reset mAh of a reading memory# N, you need to:
1) enter data view mode (double click the button)
2) keep advancing to data view of memory# N -1 - the memory reading# *BEFORE* the one you need to reset (series of single-clicks)
3) Exit data view mode selection (double click the button)
4) Press and hold the button to reset, the display is then changed to the *NEXT* reading memory which is reset.

To reset mAh reading of the current reading# 0,
you need to advance from reading memory#0 (the current reading) to reading memory#9 (8 single clicks), then press and hold the button.
NOTE: mAh of each reading storage is accumulated unless manually reset.
Specification:
Input : 3-7V/50mA~ 3500mA
Output: 3-7V/50mA~ 3500mA
Capacity : 0~ 19999mAh
The voltage resolution: 0.01 V
Test current: 0.05 A to 0.05 A
The current resolution: 0.01 A
Accuracy: plus or minus 1%
Package includes:
1 X USB Power Current Voltage Tester Meter

Charger Doctor Digital Multimeter USB Power Meter Tester Voltage Monitor Current Detector with mAh Capacity Readout for Chargers, Solar Panels, Cables, Power Banks

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$12.99

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Product review & video

[Music] so this just came in today from eBay and this is the charger doctor so on one side it's got a regular USB port which you can plug it into your USB charger or you can plug it into your power bank it's got a tiny little LC to display which gives you a readout of the voltage time amps and the amount of current that has gone into your power gone into your phone or your power bank it's got a little reset switch up here to reset the values on the display so let me just go ahead and plug this thing in so you guys can see it functions so as soon as I solve this thing and the display lights up and it gives you a readout of the voltage time it counts in minutes so this one counts in minutes this is ours this is the amount of amps that your device draws so if I plug in a power mental here I'll show the amount of current that your power bank is drawing this is the milliamp hour counter so i