(CNN) -- Apple said "a very small percentage" of iPhone 5 smartphones may "suddenly experience shorter battery life or need to be charged more frequently."
Don't get too excited just yet. After a year or two, everyone's iPhone battery seems to carry less juice than it once did. But Apple's repair program is limited to certain customers in the United States and China.
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Only iPhone 5 smartphones sold between September 2012 and January 2013 are eligible, and only those that fall within a certain range of serial numbers. Apple has opened a website that allows people to determine whether their phones are eligible. (To access your serial number, tap Settings > General > About > Serial Number).
Apple announced an even smaller iPhone 5S battery recall program last year. In June, Apple issued a recall in 37 countries for European iPhone chargers that were overheating.