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  1. Need to Charge Your iPhone? One Gallon of Gas Can Power it for 20 Years » iPhone, VoxOx, Mind-boggling, Although, With, Facebook » VoxOx Blog
    October 4, 2012 @ 9:04 am

    […] average person generates about 100 watts of power per day just walking around, so it would take 25 minutes of walking time to generate 1 minute of talk […]

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