NewerTech® : Batteries : NuPower® Battery for MacBook Pro 17" Unibody Early 2009, Late 2009, & Mid 2010 Models
Amazon.com: BatPower A1309 Replacement Laptop Battery for Apple Early 2009 Mid 2009 2010 MacBook Pro 17 inch A1297 EMC 2272 A1297 EMC 2329 EMC 2272 EMC 2352 Battery MacBook Pro 17" A1297 Apple A1309 Battery 95Wh : Electronics
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Unibody (Mid 2009 /Mid 2010) - Repair Kit : Electronics
Batteries for MacBook Pro 17" Unibody 2009 - 2010 Models
Amazon.com: LQM® 7.3V 95Wh New Laptop Battery for Apple MacBook Pro 17" A1309 A1297 (2009 Version Early 2009 Mid-2009 Mid-2010),Compatible MC226*/A MC226CH/A MC226J/A 020-6313-C 661-5037-A : Electronics