ExpertPower 11.1v 4400mAh 6 Cell Li-ion Laptop Battery for Dell Latitude D620 D630 D631 D640 Precision M2300 312-0383 310-9080 451-10297 GD775 JD605 KD489 KP423 MJ456 NT379 PC764 PD685 RC126 RD300 TC030 TD116 0JD605 Brand New 100% OEM Compatible High quality cells that meet or exceed original specifications. 1 Year Warranty