Papers

1. Energy-Efficient Charging (ATT.com)
   "At long last, AT&T launches the first wall-based USB charger that shuts itself off when not refilling a cell phone. No more vampire draw if the charger is left plugged in." 09-10
   
   
2. Energy-Efficient Charging (ATT.com)
   Designed to stop using energy when phone is charged. Reviews not very favorable. 09-10
   
   

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