Apple said earlier this week that it would offer discounted battery replacements for older iPhones that had their processors slowed, and that the cheaper replacements would begin in late January 2018. Turns out that they're going to be available even earlier than that.

Apple is offering $29 iPhone battery replacements starting today, December 30th. "We expected to need more time to be ready," Apple said to TechCrunch, "but we are happy to offer our customers the lower pricing right away. Initial supplies of some replacement batteries may be limited."

These cheaper battery replacements are available to customers with an iPhone 6 or later whose battery needs to be replaced. The offer is available worldwide through December 2018.

These battery replacements typically cost $79, so this is a pretty good deal for anyone with a qualifying device. If you've got an iPhone 6 or later and you feel like your phone has been getting slow lately, you may want to visit an Apple Store and see if you can get a fresh battery put into your device.