Lately I have found myself doing a case review here and there, and battery cases are particularly interesting since they're easy enough for us to test and integrate into our workflow in a unique matter. Plus, there's never such thing as too much battery life for a device. Battery life is a big part of our smartphone reviews, and for a while now I've been carrying around the newly-released Mophie Juice Pack Helium case for the iPhone 5. Back in the iPhone 4S days, I had a previous generation Mophie for that form factor, and even though I ran the battery life tests, I never got around to actually writing a review of the case for whatever reason. When I saw the Helium come out for the new form factor of the iPhone 5, I decided to go for it and run it through our tests.