This Laptop Battery can replace the following part numbers:
APPLE:
A1321     

This Laptop Battery can is also compatible with the following models:
APPLE:
MacBook Pro 15" A1286 (2009 Version) MacBook Pro 15" MB985*/A MacBook Pro 15" MB985CH/A MacBook Pro 15" MB985J/A
MacBook Pro 15" MB985LL/A MacBook Pro 15" MB985TA/A MacBook Pro 15" MB985X/A MacBook Pro 15" MB985ZP/A
MacBook Pro 15" MB986*/A MacBook Pro 15" MB986CH/A MacBook Pro 15" MB986J/A MacBook Pro 15" MB986LL/A
MacBook Pro 15" MB986TA/A MacBook Pro 15" MB986X/A MacBook Pro 15" MB986ZP/A MacBook Pro 15" MC118
MacBook Pro 15" MC118*/A MacBook Pro 15" MC118CH/A MacBook Pro 15" MC118J/A MacBook Pro 15" MC118LL/A
MacBook Pro 15" MC118TA/A MacBook Pro 15" MC118X/A MacBook Pro 15" MC118ZP/A MacBook Pro 15" Precision Aluminum Unibody (2009 Version)