For anyone with an iPhone 5 that's constantly running low on juice and was purchased between September 2012 and January 2013, the battery might be eligible for a recall.
Apple said "a very small percentage" of iPhones have been sold with faulty batteries, causing users to constantly need to charge their phones.
"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 company said in a statement on its website. "The affected iPhone 5 devices were sold between September 2012 and January 2013 and fall within a limited serial number range. If your iPhone 5 is experiencing these symptoms and meets the eligibility requirements noted below, Apple will replace your iPhone 5 battery, free of charge."
The replacement process will be available as of 22 August in the US and China, and in other countries as of 29 August.
To determine whether an iPhone has a faulty battery, users can check the serial number on the Apple website. The company said that it will cover the hardware until March 2015. Users who already have purchased a replacement iPhone 5 battery can apply for a refund.
Apple said any iPhone 5 that is turned in for a recall must not only have a matching serial number with those that qualify, but must also be in good condition. If the screen is cracked, or there are other obvious signs of damage, it won't qualify and Apple won't replace the battery.