Apple is replacing 1st gen iPod nanos affected by overheating batteries.

If you still have a 1st generation iPod Nano, first of all: it’s probably time for an upgrade. But you may also be eligible for a free replacement from Apple due to an overheating battery that can pose a safety risk.

According to Apple, some batteries in the original, six-year-old iPod Nano were produced with a manufacturing defect that can cause the battery to overheat and possibly catch fire. While the possibility of an incident is rare, the likelihood increases as the battery ages.

Apple has initiated an online replacement program that will provide Nano owners with a replacement, free of charge. Unfortunately, Apple won’t be sending you one of their shiny, new models, but it’s better than one that can ignite your sock drawer.

The 1st generation iPod Nano was sold between September 2005 and December 2006. It can be identified by the black or white plastic front and metal back. Subsequent models of the iPod Nano have an all metal front and back and are not affected by this battery issue.

So start looking for that old iPod Nano (might I recommend looking in the box with the VCR and 8-track player) and head over to Apple’s iPod nano (1st generation) Replacement Program to verify that it’s eligible for replacement.

For more information, visit the iPod nano (1st generation) in our recall marketplace.

Is your iPod part of the recall? Share your experience with the replacement process in the comments.