NewerTech® : Batteries : NuPower® Battery for MacBook Pro 15" Retina mid 2012 to early 2013 Models
Apple MacBook Pro with Retina display review (mid 2012) | Engadget
Apple Exchanging Some 2012 and Early 2013 MacBook Pros Needing Battery Service With Newer Models [Updated] - MacRumors
A1322 Battery for MacBook Pro 13" Unibody A1278 Mid 2009-2012
NewerTech® : Batteries : NuPower® Battery for MacBook Pro 15" Unibody Early & Late 2011, Mid-2012 Models
A1417 Battery for MacBook Pro 15" Retina A1398 (Mid 2012-2013)
Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
Amazon.com: A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro - Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) - EMC 2512 or 2673 [11.26V/99Wh] : Electronics
15" MacBook Pro Retina A1398 Full TopCase Keyboard Battery 2012 - 2013 661-6532 741925085689 | eBay
Amazon.com: iFixit A1398 A1417 Battery for MacBook Pro 15" Retina (Mid 2012- Early 2013) - Repair Kit : Electronics
Amazon.com: A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro - Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) - EMC 2512 or 2673 [11.26V/99Wh] : Electronics
Batteries for MacBook Pro 13" 2009 - Current Non-Retina Models
MacBook Pro review (13-inch, mid-2012) | Engadget
Amazon.com: A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro - Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) - EMC 2512 or 2673 [11.26V/99Wh] : Electronics