MacBook Pro 15" Unibody (Early 2011-Mid 2012) Battery - iFixit
MacBook Pro 13" A1322 battery for Apple A1278 (2009-2012)
High Quality Apple A1466(EMC 2925) Replacement Battery | Laptop Battery Direct
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Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
Amazon.com: A1322 Battery for A1278 Apple MacBook pro 13 inch Mid 2012 Early 2011 Late 2011 Mid 2010 2009 with 6000mAh Newer Tech (MC374LL/A MB990LL/A MB991LL/A MC700LL/A MD313LL/A MD101LL/A MD102LL/A Battery) :
Teardowns of Late 2013 Retina MacBook Pros Reveal No Improvements in Accessibility - MacRumors
Battery MacBook Pro 17" Unibody Early 2009 till Mid 2010 + Tools - 84.00EUR - OWCshop
Amazon.com: A1322 Battery for A1278 Apple MacBook pro 13 inch Mid 2012 Early 2011 Late 2011 Mid 2010 2009 with 6000mAh Newer Tech (MC374LL/A MB990LL/A MB991LL/A MC700LL/A MD313LL/A MD101LL/A MD102LL/A Battery) :
How to replace the battery in a mid-2012 Macbook Pro | David Artiss
Amazon.com: Replacement Laptop Battery for Apple MacBook Air 13 inch A1466(Mid 2012, Mid 2013, Early 2014, Early 2015,2017) A1369(Late 2010, Mid 2011 Version) 7200mAh,fits A1496 A1405 A1377 [New Upgraded 3.0] : Electronics