mophie's Juice Pack Air -- better known as the planet's thinnest iPhone 3G extended battery and case -- doesn't officially go on sale until Tuesday, but we've been toying with one over the weekend in order to share with you whether or not it's a solid buy. We have to say, our early impressions are pretty positive, and if you're hankering to know more, follow us past the break for a few more details.Gallery: mophie Juice Pack Air hands-on and impressions
