LQM 11.1V 90Wh 9 cell New Laptop Battery for Dell Latitude E6400 E6410 E6500 E6510 Precision M2400 M4400 M4500,fits P/N: F8TTW PT434 PT437 KY266 FU274 FU571 MN632 MP303 MP307 W1193 KY477 Battery Type: 9 Cells Li-ion Capacity: 11.1V 90Wh Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Compatible Part Numbers: 312-0748, 312-0749, 312-0753, FU441, FU444, FU571, HJ590, KY265, KY470, KY471, KY477, MP492, MP494, PT43, PT434, PT650, PT653, R822G, WG351, XP394 12 Months Warranty,30 days money return guarantee