TWB Premium Grade Generic Laptop Battery For Dell 2421 XCMRD 11.1V TWB Batteries are the perfect choice that you can make for your computer. Very affordable, The best quality batteries on the market. Long Life durable Battery for your Laptop Specifications: Battery type: Battery Condition : Brand new Cell Type: Li-ion Battery Number: 6 Cells Voltage: 11.1V Capacity: 4400mAh Compatible Models: DELL INSPIRON 14 3421 INSPIRON 14R 5421 INSPIRON 15 3521 INSPIRON 17 3721 INSPIRON 17R 5721 INSPIRON 15R 5521 Latitude 3440 2421 2521 5437 5537 3721 3737 5737 3540 Compatible with part number: 0MF69 24DRM 312-1387 312-1392 312-1433 49VTP 4WY7C 68DTP 6HY59 6KP1N 6XH00 8RT13 9K1VP DJ9W6 FW1MN G35K4 MK1R0 MR90Y PVJ7J T1G4M V1YJ7 VR7HM W6XNM X29KD XRDW2 YGMTN V8VNT 312-1390 8TT5W XCMRD 4DMNG G019Y 6K73M N121Y What's in the box 1 X Laptop Battery