Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Unibody (Mid 2009 /Mid 2010) - Repair Kit : Electronics
Amazon.com: A1278 A1322 Battery, POWERWOO MacBook pro Battery Replacement 13 inch Mid 2012 2010 2009 Early 2011 Late 2011, a1278 Battery with 6000mAh 10.95V 65.7Wh - High Performance and Longevity : Electronics
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Unibody (Mid 2009 /Mid 2010) - Repair Kit : Electronics
17-Inch MacBook Pro Battery Life, Early 2009: EveryMac.com
Battery For Apple MacBook Pro 13 inch A1278 A1322 Mid 2009 2010 Early 2011-2012 | eBay
Other Hardware Changes - Apple's 2009 MacBook Pro: Battery Life to Die For
How Long Does Your MacBook Pro Battery Last? | OSXDaily
A1321 A1286 Laptop Battery for Mac.Book Pro 15" inch (Mid 2009 & 2010 Version) MB985LL/A MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A - Walmart.com
The Best Battery Life I've Ever Seen - Apple's 2009 MacBook Pro: Battery Life to Die For
MacBook Pro Upgrade Guide
NewerTech® : Batteries : NuPower® Battery for MacBook Pro 15" Unibody Mid- 2009 and Mid-2010 Models
Determine battery cycle count for Mac laptops - Apple Support
It's old as heck but still kicking! Mid 2009 MacBook Pro (MacBook Pro 5,5) I'm hoping to use opencore legacy patcher to install Monterey on it. : r/ macbookpro
NewerTech® : Batteries : NuPower® Batteries for MacBook® Pro 15-inch Unibody (2008/2009)
A1321 A1286 Laptop Battery for MacBook Pro 15 Inch Mid 2009 Mid 2010, Replacement for MacBook Pro Battery A1321 A1286 MC371LL - AliExpress
2009 - Mid 2012 13" MacBook Pro battery
A1321 Battery for MacBook Pro 15" Unibody A1286 Mid 2009-2010