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According to measurements from Lawrence Berkeley National Laboratory, the average cell phone draws 3.68 watts of power from the outlet while it's charging and 2.24 watts when charged.
A typical charge for electricity is a little over 10c per kilowatt hour in the US or 10p in UK The television wi â¦ ll use 1 KWH in about 10 hours so it will cost in the region of 1-2c or 1-2p per hour to run.