The Apple Rechargeable Battery for 13-inch MacBook (aluminum unibody) is a 45-watt-hour lithium polymer battery.
Battery Information
Battery Rechargeable: Yes Battery Size: Proprietary Battery Size Battery Chemistry: Lithium Polymer (Li-Polymer) Battery Capacity: 4400 mAh Output Voltage: 10.8 V DC
Physical Characteristics
Weight (Approximate): 1.50 lb
Miscellaneous
Compatibility: Apple Notebooks:MacBook Pro 13" (Aluminium)MacBook Pro 15" Aluminum Unibody Series (2008 Version)MacBook Pro 15" A1286MacBook Pro 15" MB470*/AMacBook Pro 15" MB470CH/AMacBook Pro 15" MB470J/AMacBook Pro 15" MB470LL/AMacBook Pro 15" MB470X/AMacBook Pro 15" MB471*/AMacBook Pro 15" MB471CH/AMacBook Pro 15" MB471J/AMacBook Pro 15" MB471LL/AMacBook Pro 15" MB471X/A