Question

 Can you charge a laptop through a USB cord?

Answer unfortunatly no, ive tryed and its because the usb plug does not take in power, so basically its only used to connect two devices, not flow power between them.
http://wiki.answers.com/Q/Can_you_charge_a_laptop_through_a_USB_cord

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Can you charge a Nikon D60 with the USB cord and a laptop?

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