Amazon.com: Battery for iPhone 6, 3200mAh Upgraded Wavypo 2022 New Version High Capacity 0 Cycle Replacement Battery for iPhone 6 A1586 A1589 A1549 with Full Replacement Tool Kit Instruction : Cell Phones & Accessories
iPhone 6s Plus teardown reveals a 165 mAh battery downgrade versus last year's iPhone 6 Plus
How to repair/replace iPhone 6s/6s Plus battery and display (Guides) - 9to5Mac