I'm kinda spoiled. My old Sanyo with light usage, would go several days with out needing a charge. Right after I got my iphone, I cranked up the Map app (which worked very well btw) to navigate around town. What I found was that if not plugged in, I could literally watch the battery drain. My wife has had an iphone4 and I've always thought a battery case was a good choice and we had one until it kept breaking on her (Mophie Juice Pack Air- edge trim came loose on two different cases) phone. The ip5 is so new, that no one has hardly any cases for them, especially battery cases. The minus with a battery case is that the ones I've seen don't protect as well as something like an Otterbox Defender. What is the prevailing wisdom- are battery packs worth the $100 you'll spend on them or just stay close to a charger? I know in the car I'm covered. Thanks! PS- I might as well ask, what do you all recommend as the best protection/value cases out there? I've inclined to go with Otterbox, but am open to other suggestions.