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http://www.instructables.com/id/Portable-USB-Charger-Version-2.0/

These are the public entries for this link:

• Portable USB Charger (Version 2.0)
  The World's Biggest Show & Tell - tech, diy
  By dwadeca in Computer Tips with computer diy show tech tell tips worlds
• Portable USB Charger (Version 2.0)
  The World's Biggest Show & Tell - tech, diy
  By dwadeca in USB Utilities with diy show tech tell usb utilities worlds

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