New E6400 Battery for Dell Latitude E6510 Precision M2400 M4400, fits P/N: F8TTW PT434 PT437 KY266 FU274 FU571 MN632 MP303 MP307 W1193 KY477[11.1V 90Wh] Power specs:9 Cells Li-ion Capacity: 11.1V 90Wh Color: Sliver Fit Laptop Models: Dell Latitude E6400 E6500 E6510 Precision M2400 M4400 100% New from Manufacturer, About 500 recharge cycles over the life of the battery. Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety SOLICE guarantee - your repeat business is important for us, so if you do not like our product or don't want It for any reason, we will happily accept the return and give you your money back in 30 days and 12 months for warranty and exchange.anyway,return or refund are available.(Please check your laptop model and buy it with confidence!)