Apple announced it officially apologizes for the old iPhone's performance degradation problem and discounts more than 60% of the battery replacement cost - GIGAZINE
iPhone 6s Original Battery
Apple is reneging on its promise to replace iPhone batteries at a discount claims BBC - PhoneArena
iPhone Battery Replacement: Cost and Service details
iPhone Battery Replacement Cost & Deadline To Get New Battery | Macworld
Apple Apologizes For Slowdowns, Lops $50 Off Battery Replacement Cost | WAMU
Cost of iPhone 6s battery replacement - Apple Community
How much does it cost to replace iPhone Battery? - iPhone Repair NYC
iFixit selling $30 iPhone battery replacement kits through 2019 after Apple ends discount program for official repairs - 9to5Mac