This elegant backup's high-output battery delivered the fastest charge, juicing an iPhone in 90 minutes. It can fill an iPad to 60 percent or provide two full phone charges, and it's certified for 500 cycles, making it the most durable in our test. Impressive, but we wish it offered more than one USB port. [$80; mophie.com]
Gear of the Year
The best tools, tech, and toys of 2013.
Plus: Lance Armstrong's Downfall
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