As, We all know in today’s hectic world we have no free time left, not even to charge our own mobile phones. One more reason could be because we are not at home most of the time. We are always on the run. So in order to curb this problem. A new technology known as a power bank which is very useful to charge your phone wherever you want to has proved to be a boon in the modern world. Power Bank is a cuboidal shaped battery which has two ports one for charging the power bank and another for charging the phone. It also has one chord which can be used for charging both. Power Banks are often small in size and are light in weight. It has different power capacities ranging from 3, 000 mah to 20, 000 mah. There are also power banks which range more than 20, 000 mah. There are diffrent brands such as syska, lenovo, mi, sony, etc. I have a mi power bank and a sony one. Both of them work exceptionally well . One is of 10, 000mah and the other is of 3, 000 mah . I would recommend each and everyone to buy a power bank as this a gadget which comes handy anywhere and everywhere. I am attaching the pictures to let you know the design of my power banks.