This A1237 battery replaces the original 2008 - 2009 Apple MacBook Air 13 inch series laptop battery. Laptops built from 2008 to mid 2009 use this battery. This battery fits Apple a number of models including A1237 and A1304. Compatible with these MacBook Air 13 inch models: A1237 A1304 MB003 MB003J/A MB003LL/A MB003TA/A MB003X/A MB003ZP/A MB543LL/A MB940LL/A Z0FS MC233 /A MC233CH/A MC233LL/A MC233TA/A MC233X/A MC233ZP/A MC234 /A MC234CH/A MC234LL/A MC234TA/A MC234X/A MC234ZP/A MC503CH/A MC503J/A MC503LL/A MC503TA/A MC503X/A MC503ZP/A MC504J/A MC504LL/A MC504TA/A MC504X/A MC504ZP/A Replaces these many Apple MacBook Air 13" A1237 battery part numbers: A1245 - battery number A1237 - Laptop model A1304 661-4587 661-4915 661-519 What's in the box 1 x Battery