MacBook Pro 15" Retina Top Case with Battery, Mid 2015 - 661-02536
Amazon.com: Puredick A1417 Battery for (Mid 2012 & Early 2013) MacBook Pro A1398 Battery Replacement - [Upgraded A1417 Battery for 15-inch Retina A1398 MacBook pro 2012 to Early-2013] EMC 2512 or 2673 : Electronics
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Retina (Mid 2018/2019) : Electronics
Battery Replacement Kit for 15-inch MacBook Pro (2016 - 2017)
Egoway New Replacement Laptop Battery for Apple Macbook Pro 10.1 15-in
NewerTech Replacement Battery for 15" MacBook Pro NWTBAP15MBPR84
Important notice for batteries in certain MacBook Pro units - Apple
How to check into a free battery replacement for MacBook Pro - 9to5Mac