A Power Bank is a great utility which lets you charge your smartphone, tabs and other devices without a power socket. Power bank means a type of charger. It is called a portable charger. Now at the moment or in a modern time, it is so important. Another side now our country is developing an electronic site. It’s growing up. Now at a modern time, we live a modern generation in our country. 80 percent people in our country are using a mobile phone.