TechOrbits replacement battery for Dell Latitude D620 D630 Precision M2300 310-9080 312-0383 312-0386 312-0653 451-10298 GD775 GD776 GD787 JD605 JD606 JD610 JD616 JD634 KD491 KD492 KD494 KD495 NT379 PC764 PC765 PD685 9 cell