NewerTech® : Batteries : NuPower® Battery for MacBook Pro 15" Retina mid 2012 to early 2013 Models
Apple Exchanging Some 2012 and Early 2013 MacBook Pros Needing Battery Service With Newer Models [Updated] - MacRumors
MacBook Pro 15" Retina Top Case w/ Battery (Mid 2012 - Early 2013) - 661-6532
iFixit posts repair guide for Retina MacBook Pro, estimates battery replacement at $500 - 9to5Mac
MacBook Pro A1286 Mid 2012 Battery Replacement Service Dallas – Apple Mac Computer Repair Dallas , Laptop ,Desktop ,iMac ,MacBook iPhone iPad Data Recovery ,Virus
MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery - iFixit