Question

I want to know who invent power bank

Answer 1

Pristine invited power bank

Answer 2

Power Bank 
-------------
Power Bank was Invented by 2 college students
-----------------------

1) These power banks were first invented in China 

2) Power Banks are used for storing the electric Current 

3) Power banks are used when we have no electricity 

4) Power banks are used for only charging of Mobile Phones