BRTONG High Performance Laptop/Notebook Battery for Dell Inspiron 1420, Vostro 1400 series Laptop Battery - fits P/N WW116 / MN151 / 312-0543 / FT080 Compatible Models: Dell Inspiron 1420 Dell Vostro 1400 Compatible part number: 312-0543 312-0584 451-10516 FT080 FT092 KX117 NR433 PR693 WW116 Battery type: Li-ion; Capacity: 5200mAh/58WH; Cells: 6-cell; Voltage: 11.1V Operation time for standard batteries: Around 2.5-3 hours, the actual operation time will depend on how much electricity is required by the device and how you use it CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 12-month hassle-free warranty