Nb-battery New Rechargeable Battery Xcmrd for Dell Inspiron 3421 5421 3521 5521 3721 5721 14 15 17 N121y Mr90y Laptop Battery Capacity: 5200mAh Voltage: 11.1V Cells: 6-cell Compatible with VR7HM, G019Y, 312-1433, FW1MN, XCMRD Dell 6K73M Laptop Battery,Dell V8VNT Laptop Battery,Dell V8VNT Laptop Battery,Dell 6K73M Laptop Battery,Dell VR7HM Laptop Battery Designed for DELL Inspiron 14-N3421 Series,DELL Inspiron 17R-3721 Series,DELL Inspiron 14R-N3421 Series,DELL Inspiron 15-N3521 Series,DELL Inspiron 5721 Series 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.