Product reference : #BLD-81791
Battery laptop apple macbook pro 2.7 ghz core i7 (i7 8559u) a1989 (emc 3214)
Chemistry : Lithium-Ion
Capacity : 5050 mAh
Voltage : 11,4 V
Color : Noir
Series : apple macbook
Subseries : macbook-pro
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For all battery the difference of 2 volts in the voltage is negligible. The compatibility with your old Battery laptop apple macbook pro 2.7 ghz core i7 (i7 8559u) a1989 (emc 3214) is therefore ensured.