If it seems as though your iPhone 5s loses battery life faster than it should or if it takes a long time to recharge, you’ll be happy to learn that it’s not just you. Apple said they recently discovered a manufacturing issue affecting a limited number of iPhone 5s devices responsible for these very problems.

An Apple spokesperson told the New York Times that the company is reaching out to customers with affected phones and will provide them with a replacement free of charge. As Gigaom points out, the wording used by the Apple rep suggests the company is aware of which phones are affected and will be contacting customers proactively. It’s unclear how or when this will take place, however.

Furthermore, Cupertino didn’t let on as to how many phones fall into this category although the publication said the statement implied it might be just a few thousand. At this point, all we know for sure is that Apple sold nine million new handsets (both the iPhone 5s and the 5c) on opening weekend last month and 33.8 million phones during the most recent quarter.

It’s also worth highlighting the fact that a manufacturing issue isn’t the same as a defective battery. Apple has faced faulty battery issues in the past, most notably in 2006 when they recalled select MacBook batteries because they weren't performing as they should have.

Earlier this month, Samsung launched a free Galaxy S4 battery replacement program in select regions after receiving multiple complaints of poor battery life.