Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Retina (Mid 2018/2019) - Repair Kit : Electronics
iFixit kit helps with that tricky Retina MacBook Pro battery swap
Update! Replaced battery with iFixIt kit! : r/macbookpro
Surprise! iFixit says you can't do much to fix or upgrade the 2015 MacBook | Ars Technica
iFixit Tears Down Battery, Improved Keyboard, and Removable SSD of MacBook Pro Without Touch Bar - MacRumors
Amazon.com: iFixit Compatible with Battery MacBook Pro 15" Retina (Mid 2015) : Electronics
MacBook Pro 13" Retina Display Early 2015 Battery Replacement - iFixit Repair Guide
MacBook Pro 15" Retina Display Mid 2015 Repair - iFixit
A1618 Battery for MacBook Pro 15" Retina A1398 (Mid 2015)
Replacing my 2015 15" MacBook Pro's Battery - YouTube
Just installed battery #3 in my mid-2015 MacBook Pro. Also applied fresh thermal paste and removed the dust. Here's to many more years of use! : r/ macbookpro
Amazon.com: iFixit A1398 A1618 Battery for MacBook Pro 15" Retina (Mid 2015) - Repair Kit : Electronics
How To: Replace the Battery in a Macbook Pro 13" Unibody - YouTube