Amazon.com: uowlbear Battery for iPhone 6s Plus, 4950mAh Replacement Battery for iPhone A1634 A1687 A1699 with Complete Replacement Kits, Two Set Adhesive Strips and Waterproof Seals -High Capacity 0 Cycle : Cell
iFixit on Twitter: "Adhesive strips are great, until they break mid-pull. How do you finagle broken adhesive strips from under an iPhone battery? https://t.co/obCdf0TJHs https://t.co/GheF8ThIPP" / Twitter
IPhone 6 Plus Battery Replacement: Guide to Replace the Internal Battery : 12 Steps (with Pictures) - Instructables