Compatible Replacement A1245 battery for MacBook Air A1237 Early 2008 A1304 Mid 2009 A1245 Battery For Apple MacBook Air 13" A1237 MC234 MC503 MB003LL/A Compatible Part Number: Apple MacBook Air 13" Model: A1245 A1237 A1304 Compatible with Laptop Models: - Apple MacBook Air 13" MB003 Series - MacBook Air 13" MB003 - MacBook Air 13" MB003J/A - MacBook Air 13" MB003LL/A - MacBook Air 13" MB003TA/A - MacBook Air 13" MB003X/A - MacBook Air 13" MB003ZP/A - Apple MacBook Air 13" MC233 Series - MacBook Air 13" MC233 /A - MacBook Air 13" MC233CH/A - MacBook Air 13" MC233LL/A - MacBook Air 13" MC233TA/A - MacBook Air 13" MC233X/A - MacBook Air 13" MC233ZP/A - Apple MacBook Air 13" MC234 Series - MacBook Air 13" MC234 /A - MacBook Air 13" MC234CH/A - MacBook Air 13" MC234LL/A - MacBook Air 13" MC234TA/A - MacBook Air 13" MC234X/A - MacBook Air 13" MC234ZP/A - Apple MacBook Air 13" - MacBook Air 13" MB940LL/A - MacBook Air 13" MB543LL/A - MacBook Air 13" MC233LL/A Specification: - Battery Type: Li-ion - Voltage: 7.4 40Wh - Capacity: 4400 mAh