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NewerTech® : Batteries : NuPower® Battery for MacBook Pro 17" Unibody Early 2009, Late 2009, & Mid 2010 Models
MacBook 13" Unibody (A1342 Late 2009-Mid 2010) Battery
Battery for 2008-2009 MacBook Pro 15-Inch (Unibody)
Laptop battery For Apple MacBook Pro 13 MC207LL/A MacBook6,1(Late 2009) MC516LL/A MacBook7,1 (Mid-2010) A1342 A1331 battery - AliExpress
Genuine A1322 Battery for Apple Macbook Pro 13" A1278 Mid 2009/2010/2011/2012 | eBay
Amazon.com: iFixit Battery Compatible with MacBook Pro 13" Unibody (Mid 2009 to Mid 2012) : Electronics
MacBook Air (Original/Late 2008/Mid 2009) Replacement Battery – A & M Digital Technologies, LLC
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Replacement Batteries For 13" MacBooks Late 2009 - Mid 2010
NewerTech NuPower Battery for MacBook Pro 17", NWTBAP17MBU03H
Apple MacBook 13-inch Late 2009 Replacement Battery
Amazon.com: A1322 Battery,Runpower Replacement Battery for MacBook Pro 13 inch A1278 Battery(Mid 2009 Mid 2010 Early 2011 Late 2011 Mid 2012) : Electronics