Important to find for MacBook model number: About this Mac --> More info... --> Serial number--> Check your for MacBook's version on official website or Google with the SN. (Please check the for MacBook Air Model Number on the laptop back case and Make Sure Your Own Laptop Battery Model Before Place Order!) Pls remove the plastic film before installing the battery, thank you！！ Specification: Battery type:Li-polymer Voltage: 7.6V Capacity: 55Wh Cell:4 Cells recharge cycles： 500 Operation time: Around 1.5-3 hours Fit Laptop Models: For Apple MacBookAir3,2 13" A1369 - (Late 2010) MC503LL/A (1.86 GHz Core 2 Duo) MC504LL/A (1.86 GHz Core 2 Duo) MC504LL/A BTO (2.13 GHz Core 2 Duo) For Apple MacBookAir4,2 13" A1369 - (Mid 2011) MC965LL/A (1.7 GHz Core 2 Duo) MC966LL/A (1.7 GHz Core 2 Du.
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