Apple has determined that a very small percentage of iPhone 5 devices may suddenly experience shorter battery life or need to be charged more frequently. The affected iPhone 5 devices were sold between September 2012 and January 2013 and fall within a limited serial number range.
Initially, Apple said that the program would cover iPhone 5 batteries for "two years after the first retail sale of the unit or until March 1, 2015."
However, the program has now been extended to cover "affected iPhone 5 batteries for 3 years after the first retail sale of the unit." That means that depending on your device, it qualifies for a battery replacement until September 2015 or January 2016, at the latest.
You can check your serial number and get more information about how to replace your battery at the link below.
I just learned of this last night so I went to a service center this morning. They said I was not eligible anymore because 3 years has lapsed from date of purchase. That is even though the Apple website says my iPhone's serial number is eligible. Pfft
Thank god I bought the iPhone 6 as I was going to go for the iPhone 5 on a cheap deal. PS my iPhone 6 battery lasts me Two days and it's still at 26%.Awesome upgrade my iPhone 6 is compared to iPhone 4 I'm so proud of my purchase.