Read the related story: "Bionic fingers give amputees upper hand"
December 8, 2009 12:20 PM PSTUpdated: December 8, 2009 1:48 PM PST
Photo by: TouchBionics
/ Caption by: Elizabeth Armstrong Moore
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Is your phone battery always at 4 percent?
These battery packs will give your device the extra juice to power through all of those texts and phone calls.