This is a OEM or compatiblebattery can replace the following battery part nrs:
A1322, 020-6547-A, 661-5391, 661-5229, 661-5557, MC118LL/A, MC026LL/A,
MB985LL/A, MB986LL/A, MC371LL/A, MC372LL/A
This battery is applicable to the following laptop models: Apple MacBook Pro A1278 Apple Macbook Pro A1278 (Mid 2012) Core i7 2.9 Apple Macbook Pro A1278 (Mid 2012) Core i5 2.5 Apple Macbook Pro A1278 (Mid 2010) Core 2 Duo 2.66 Apple Macbook Pro A1278 (Mid 2010) Core 2 Duo 2.4 Apple Macbook Pro A1278 (Mid 2009) Core 2 Duo 2.53 Apple Macbook Pro A1278 (Mid 2009) Core 2 Duo 2.26 Apple Macbook Pro A1278 (Late 2011) Core i7 2.8 Apple Macbook Pro A1278 (Late 2011) Core i5 2.4 Apple Macbook Pro A1278 (Early 2011) Core i7 2.7 Apple Macbook Pro A1278 (Early 2011) Core i5 2.3

Mac.Infinity Tips

How to prevent swollen battery?

• Keep the battery cool for the most part – in other words, keep it within regular laptop operating temperatures. Don’t store it in the sun or use it plugged in for long periods of time in the sun.

• Use the right capacity Apple charger or quality third-party manufacturer charger.

• Don’t leave the laptop constantly plugged in when it doesn’t need to be.

• Replace old batteries that are not holding their charge anymore.

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