Apple has started a new program under which it plans to replace the first generation iPod Nano device due to a faulty battery that overheats.
In a note posted on its website, Apple said that the problem was very rare among iPod Nano first generation users and affected devices were sold between September 2005 and December 2006.
Apple said that the affected versions of the device, which comes in black or white, received batteries from a manufacturer who made faulty pieces.
"This issue has been traced to a single battery supplier that produced batteries with a manufacturing defect. While the possibility of an incident is rare, the likelihood increases as the battery ages," the company said.
Apple has urged users to order a replacement device free of charge under the new program. The company said that it will first check the serial number on the iPod Nano device to see if the device is eligible for the program.
The replacement device will be delivered to the users within six weeks after they send their original device to the company for replacement.
The company warned that users must back up the data on the device using iTunes before sending the device replacement. Apple also said that users who have personalised first generation iPod Nano will receive a non-personalised device.