BULL 9 cell New Laptop Battery for Dell Latitude E6400 E6410 E6500 E6510 Precision M2400 M4400 M4500 Compatible P/N: 4M529 312-0749 F8TTW PT434 PT437 KY266 FU274 FU571 MN632 MP303 MP307 W1193 KY477 Battery type:Li-ion ; Voltage:11.1V ; Capacity:90WH; Color: Sliver Fit Laptop Models: Dell Latitude E6400 E6410 E6500 E6510 Precision M2400 M4400 M4500 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Warranty: 18 Months Warranty,30 days money return guarantee!