Your probably wondering why I’m reviewing this hot drink cup next to the iPhone 4s. Well technically it is a hot drink cup, but the goodies are inside the package. It’s actually a snap-on case with a battery pack! There are tons of battery cases out there, but this one from iNature is definitely a little different. iNature's Refill+ battery case isn't the first unique case we've reviewed. The company's Kiano 4 keyboard case brought an amazingly ultra thin, slide-out backlit keyboard to the iPhone. So does this battery case live up to the fancy cup packaging? Hit the jump to find out!