Mini Portable USB Power Power Bank Tester


Main Features

  • No extra power supply needed.
  • deal Tool for testing : Power Adapters , Power Banks.
  • High quality, small sized, easy and convenient to carry.
  • Suitable for factories, laboratories and personal use.
  • Measures current and voltage of power supply equipment with USB port
  • Product Uses : phone, any electronic product, such as PC, laptop, power bank.



( Quick Guide  Manual )



Connecting USB Dongle Tester With Mobile Phone:

In this example, The USB Voltage/Current meter Input is connected to the mobile phone power supply unit and on the other side (Output) , Its connected via USB Male to Micro USB cable to a Smartphone. The Current  displayed is 0.39A(Note : Unit is measured in ampere).



Calculating Power Bank Capacity by Counting how many times it can charge a phone

Calculation of the conversion rate power bank :

Power Bank capacity X 0.8 (20% loss) / mobile phone battery capacity = charging times




Converting Amps (Current) to ampere-hour rating (Ah)

Amps x Hours = Amp-Hour




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