Mini Portable USB Power Power Bank Tester

Last updated on December 13th, 2018 at 10:58 pm

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 )

Example

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

    EXAMPLE:

• Power Bank capacity : 11200mah .
• Mobile phone battery capacity : 3100mAh .
   Charging Times = 11200mAh X 0.8 / 3100mAh = around 2.89 times .

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

Amps x Hours = Amp-Hour

     Recommend Tools for Practical testing :

• Stop Watch For measuring Time.
• Power Bank Unit (Power Supply Source) .
• Power Monitoring App installed on the Mobile Phone.
• Power Monitoring Tool : Voltage / Current Mini USB tester.
• The Appliance that needs charging, for example : Mobile Phone, Tablet PC etc.