Features: - Battery type: Li-ion - Voltage: 11.1v is compatible with 10.8v - Capacity: 4400 mAH - Brand: Unbranded /OEM Compatible Models. - Dell Inspiron 3531 14-3421, Dell 14-3421, Dell 14-3437, Dell 14-3000, Dell 14-3441, Dell 14-3442 3443, Dell 14R-5421. - Dell 3421, Dell 3437, Dell N5537, Dell N5721, Dell N5737. - Dell 14-N5421, Dell 14R, Dell 14R-3421, Dell 14R 5437. - Dell Inspiron 15-3521, Dell 15-3537, Dell 15-3000, Dell 15-3541, Dell 15-3542, Dell 15-3543. - Dell 15R-5521, Dell 15R-5537. - Dell 15R-N3521, Dell 15R-N5521, Dell 15R-N5537. - Dell Inspiron 17-3721, Dell Inspiron 17-3737, Dell Inspiron 17-5000, Dell Inspiron 17-5748. Dell Inspiron 17-5749 - Dell 17R-5737, Dell 17R- 5721, Dell 17R-N3721, Dell 17R-N3737, Dell 17R-3737, Dell 17R-N5721, Dell 17R-N5737. - Dell Latitude 14 3000. - Dell Latitude 15 3000. - Dell Latitude 3440, Dell Latitude 3540. - Dell Vostro 2421, Dell Vostro 2521, Dell Vostro 3449, Dell Vostro 3549, Dell Vostro 3445, Dell Vostro 3446, Dell Vostro 3546. Compatible part numbers - W6XNM, 0MF69, 49VTP, 68DTP, 6KP1N, 8TT5W, FW1MN, MK1R0, PVJ7J, V8VNT, X29KD, YGMTN, 24DRM, 312-1387, 312-1392, 312-1390, 4DMNG, 6HY59, 6XH00, 9K1VP, G019Y, MR90Y, T1G4M, VR7HM, XCMRD, 4WY7C, 6K73M, 8RT13, DJ9W6, G35K4, N121Y, V1YJ7. What's in the box Laptop Battery