Tips: Please check carefully about your laptop model name/battery part number/battery shape and size to make sure you purchase the correct battery. Specification: Battery type: Li-ion Voltage: 11.1V Capacity: 7800mAh/89Wh Cell:9 Cells recharge cycles： 500 Operation time: Around 2.5-3hours Compatible Models For Dell Precision M Series: M4600 / M4700 / M6600 / M6700 For Dell Precision Mobile Workstation Series: M4600 / M4700 / M6600 / M6700 Compatible Part Numbers 312-1176 / 312-1177 / 312-1178 / 312-1354 / 331-1465 / J5CG3 1C75X / 3DJH7 / 97KRM / FV993 / FJJ4W / KJ321 / RY6WH / R7PND 9GP08 / FVWT4 / PG6RC / V7M28 / 0TN1K5 / X57F1.
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