Apple has published an apology letter to customers in regards to “Batterygate” for slowing down older phones to compensate for erratic battery performance. The letter starts off this way:

“We’ve been hearing feedback from our customers about the way we handle performance for iPhones with older batteries and how we have communicated that process. We know that some of you feel Apple has let you down. We apologize.

“There’s been a lot of misunderstanding about this issue, so we would like to clarify and let you know about some changes we’re making.”

“First and foremost, we have never — and would never — do anything to intentionally shorten the life of any Apple product, or degrade the user experience to drive customer upgrades. Our goal has always been to create products that our customers love, and making iPhones last as long as possible is an important part of that.”

The tech giant is offering $29 replacement batteries for those with an iPhone 6 or later. The discount, which represents a $50 savings, starts in late January and ends in December 2018. Apple will also add more battery health information to iOS to let users know when the battery begins to compromise performance.