Product reference : #BLD-73275
Battery laptop sony pcg 41217
Chemistry : Lithium-Ion
Capacity : 4400 mAh
Voltage : 11.1 V
Color : noir
Series : sony pcg
Subseries : pcg-4
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For all battery the difference of 2 volts in the voltage is negligible. The compatibility with your old Battery laptop sony pcg 41217 is therefore ensured.