The news has recently been littered with incidents of electrocution caused by Apple USB chargers.
As a result, on Tuesday Apple announced that anyone worried that their charger is a counterfeit will be able to take it into an Apple store and have it replaced by the company for $10 or the local equivalent. The replacement offer will commence on 16th August 2013 until 18th October 2013.
The death of 23 year old Ma Ailun was later blamed on a third-party charger. However, there was no mention of this incident by Apple.
If you are wishing to trade in a suspected counterfeit charger you must take the charger along with the device or the serial number of the device it is being used to charge.