Most of the battery power banks currently available in the market are universal in nature and that it supports any devices with a micro USB or Apple’s input connector. They are usually bulky to carry around and is a detachable component which does not compliment the mobile device’s overall intended design and usability. In this case of the product we have developed for Apple’s iPhone5, most major brands have designed it as a battery case whereby the power bank is integrated with the protective case as a single component product. When the iPhone5 is used with such battery case, it adds unnecessary weight and bulkiness when you do not require the extra power. However one does really require that extra power when the device is running out of it. Further adding to that, most battery case designs currently in the market seems not to consider the elongated height of the iPhone5 and designed external battery banks having their connector built at the bottom of the case, it further emphasizes the height of the iphone5 and making it unproportionate. We therefore designed ours (the ‘Parallel’) to be the solution to these issues. 1. A power bank that can be removed when not in use so as to retain the intended form factor and have minimal increase in weight with a protective case on the phone. 2. Positioning Apple’s Lightning connector in a way that it does not add length to the already elongated iPhone5. The Product ‘Parallel’ is a detachable battery power bank with a separate protective case made specifically to fit the Apple’s iPhone5. Its name is derived from the idea of “to reflect its fitting nature”, It is also able to have a Slide to Lock feature without having to extend any longer than the iPhone5 and thus retaining its intended form factor.