Even since I got my first iPhone a few years ago, it’s been protected by a case. Part of this stems from losing my last non-iPhone to a catastrophic drop. However, recently I’ve been using a battery case that pulls double duty—protecting my investment and extending its battery life. Currently, I’m using the mophie PowerSkin for iPhone 5, but I have just finished testing out a brick house of a case from Snow Lizard: the SLXtreme 5. This case can literally withstand pretty much anything you throw at it—it’s waterproof and has military-grade ruggedness, and its built-in battery is solar-powered. However, its size and price tag narrows its usefulness.