A latest technology for smartphones should be invented as a portable charger POWERBANK. it functions to store power and u can use it while your mobile phone battery should be discharged. its output depends upon the mAH of powerbanks
We are the leading suppliers of mobile power bank. It is a portable device for charging smartphones,tablets,laptops & other battery operated devices which can charge by 5v USB outlet.
Peoples suffers from battery backup of smartphones so that it can not used it properly if travels outside.
A power bank is very important product as a portable charger for now a days.