Juwei USB Tester

#usb #tester #usbtester

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USB Safety Tester

Product link:
https://amzn.to/2zh3M3R

Input Voltage: 3V – 30V
Input current : 0 – 5.1A
Cumulative capacity range: 0-999.99 Ah
Cumulative power range: 0-999.999 Wh
Timing the maximum range: 0-999 hours 59 minute 59 seconds precision: 1 second
Parameters that you can test: Voltage of battery. Current of battery, discharge capacity of battery,Quantity of electric charge,power of battery,timing.
Parameters adjusting function: Yes.

The usb connector is reversible, it is always possible to mount with display up.
Own current consumption is 20mA
Internal resistance is about 0.17ohm including connection resistance.
Remembers Wh and Ah when power is off
Voltage display is within 0.03 volt in the 4.0 to 6.0 volt range.
Current display is within 0.02 ampere in the 0 to 3.0 ampere range with 5 volt supply.
Over current turn off is at 5A (Can be configured)
Over voltage turn off at 30 volt (Can be configured)
Under voltage turn off is at 3V, actually 2.3V due to ADC error at low voltage (Can be configured)
USB data works fine.
Meter has a buzzer than sound when voltage is connected/disconnected.

Видео Juwei USB Tester канала FliQVid