How to confirm whether the battery is suitable for your Macbook?
1*.Find the serial number printed on the bottom of the Macbook next to the regulatory mark. It can also be found next to the barcode label on the original packaging.
2*.Open your macbook pro and click the menu in the upper left corner, click "About This Mac" and you will see the model, size, and release year, such as " Macbook Pro, 13 inch, Mid 2012"
3*.The original packaging may show an part number, such as MNYF2xx/A ("xx" is a variable, which varies by country or region). You can find the entry that matches this MacBook part number in the DESCRIPTIONS to find your model.
If you're still not able to find the right model of your macbook, welcome to contact us via email at any time, we are always here for you within 24 hours!
Compatibility Of The Mac Pro Batteries:
MacBook Pro 13" A1278 A1322 Battery Compatible with Mac Pro Models:
MacBookPro5,5--A1278 (EMC 2326),13-inch,Mid 2009
MacBookPro7,1--A1278 (EMC 2351),13-inch,Mid 2010
MacBookPro8,1--A1278 (EMC 2419),13-inch,Early 2011 & Late 2011
MacBookPro9,2--A1278 (EMC 2554),13-inch,Mid 2012

MacBook Pro 13-inch:
MB990*/A / MB990CH/A / MB990J/A / MB990LL/A / MB990TA/A / MB990ZP/A / MB991*/A /
MB991CH/A / MB991J/A / MB991LL/A / MB991TA/A / MB991ZP/A / MC700 / MC700B/A /
MC700E/A / MC700J/A / MC700LL/A / MC700TA/A / MC700X/A / MC700ZP/A / MC724 /
MC724B/A / MC724E/A / MC724J/A / MC724LL/A / MC724TA/A / MC724X/A / MC724ZP/A /
MD313LL/A

Compatible Part Numbers:
661-5229 / 661-5557 / 020-6547-A / 020-6765-A / A1322 / A1278 (2009 2010 Early 2011 version)
Please be aware that our built-in battery only for laptops manufactured in 2009 2010 2011 2012,
not work for laptops made in 2008 (such as A1278 made in 2008)!