Cupertino, C.A. - Apple has some good news for some of their iPhone users dealing with a failing battery.

Apple has launched a battery replacement program after revealing “a very small percentage of iPhone 5 devices may suddenly experience shorter battery life or need to be charged more frequently.” Apple will replace the battery for free but only for iPhone 5 smartphones within a certain range of serial numbers and sold between September 2012 and January 2013.

You can check here to see if you’re eligible.