For all the users who are facing default battery issues in their  Apple iPhone 5  handsets, which was bought between September 2012 to January 2013 and which falls within a particular specified series, it is advisable to check on the Apple’s official website: iPhone 5 Battery Replacement Program Website, if they are still eligible for a battery replacement as Apple has extended this replacement program till January 2016. A word of caution for the users is that even if they are eligible for a replacement, the handset should be in good condition; in other words if the handset is damaged then it needs to be mended and then can proceed  further for a replacement.