The program will officially start on August 16th in the United States and on August 9th in China. The offers will be available at official Apple Retail Stores and Authorized Apple Resellers.
Apple reported that counterfeit chargers may have safety issues while official Apple chargers have been thoroughly tested for safety.
Apple's takeback program for any USB power adapter made for use with iPhone, iPad, and iPod for which you have concern.
"If you need a replacement adapter to charge your iPhone, iPad, or iPod, we recommend getting an Apple USB power adapter. For a limited time, you can purchase one Apple USB power adapter at a special price — $10 USD or approximate equivalent in local currency. To qualify, you must turn in at least one USB power adapter and bring your iPhone, iPad, or iPod to an Apple Retail Store or participating Apple Authorized Service Provider for serial number validation. The special pricing on Apple USB power adapters is limited to one adapter for each iPhone, iPad, and iPod you own and is valid until October 18, 2013."
Apple was concerned over the death of a Chinese flight attendant who may have been using a counterfeit charger.
Apple reps will not be able to telly trade-in customers if the model of the charger they trade-in is safe or not. All trade-ins will recycled.
The regular price from Apple for a USB power adapter is $19.00.