You can pack up your life in the back and hit the road, just as much of Oklahoma did in the 1930s.

ECONOMIST: Pickup country

The juice pack virtually doubles the battery life of the iPhone and its soft touch hardware also provides protection from device bumps, bangs and drops.

ENGADGET: Mophie's $80 Juice Pack Air ships to power-hungry iPhone 4 owners

Its two selling points are an extended battery range of 120 miles rather than 100, and onboard battery heating and cooling, which should extend the life of the pack.

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