Specifications: Brand: Unbranded /OEM Voltage: 11.1 Capacity: 4400 mAH Compatible part numbers GU715, H1391, KY265, KY266, KY477, NM631, P018K, PT434, RG049, TX283, U844G, W0X4F, W1193, 0GU715, 0H1391, 0MP307, 0P018K, 0RG049, 0TX283, 0W0X4F, 0W1193, 312-0748, 312-0754, 312-0917, 312-7414, 312-7415, 451-10583, 451-11399, C719R, Compatible Models. Dell Latitude E6400, Dell Latitude E6400 ATG, Dell Latitude E6400 XFR, Dell Latitude E6410, Dell Latitude E6410 ATG, Dell Latitude E6500, Dell Latitude E6510, Dell Precision M2400, Dell Precision M4400, Dell Precision M4500 What's in the box 1x Laptop Battery