No matter how big smartphone-batteries are, smartphone users still often must rely on-external battery packs to keep them going, so it’s no wonder the accessory market is filled with third-party accessories that promise to prolong battery life on iPhones, Android devices and other gadgets that might require frequent charging. FastCoDesign has found-a new external battery concept though,-and it offers-a different and unique take on providing-extra power. FROM EARLIER: Meet XOO, the belt that can recharge your iPhone and Android smartphone Designer Tsung Chih-Hsien has imagined a disposable cardboard battery capsule that would come in-different sizes called Mini Power, which can deliver a battery boost for a certain amount of time (as seen in the image above), and can then be



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