We design & manufacture Power banks which enable users to recharge devices such as smartphones, tablets, and other media devices with USB capability. Even with rapid advancements in technology, tablets and smartphones still have batteries with a limited capacity, subsequently driving the demand for power banks. The number of applications on a smartphone and the frequency with which they are used for a range of activities, from social media browsing, to shopping and ordering food online, depletes the battery. Owing to limited capacity of smartphone batteries, high battery power sources are required, which further drives the demand for power banks.