NinjaBatt Laptop Battery For Dell Latitude E6400 E6410 E6510 E6400 E6500 Precision M2400 M4400 M4500 MP303 PT650 MP490 4M529 PT434 312-0749 312-0748 312-0754 PP27L W1193 1M215 – 6 Cells/4400mAh/49Wh