Dtk New Laptop Notebook Battery Replacement for Dell Computer Latitude E6400 E6410 E6500 E6510 Precision M2400 M4400 M4500 6-cell Battery type: Li-ion; Capacity: 4400mAh; Cells: 6-cell; Voltage: 11.1V. // If you want a large capacity battery, you can choose ASIN: B00MP7H9G4 Compatible Models: DELL Latitude E6400 / Latitude E6400 ATG / Latitude E6400 XFR / Latitude E6410 / Latitude E6410 ATG / Latitude E6500 / Latitude E6510 / Latitude E8400 / Precision M2400 / Precision M2400N / Precision M4400 / Precision M4500 Compatible Part Numbers: KY265 / KY266 / PT434 / W0X4F / W1193 / 0KY266 / 0RG049 / 0PT436 / RG049 / 312-0748 / NM631 / NM633 / PP27LA / NM632 / MP303 All DTK products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety.Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Operation time for standard batteries(9-cell, 6600mah): Around 3 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support, 12-month hassle-free warranty. Overheating protection Overcurrent protection Overvoltage protection Overcharge protection Over discharge protection Short circuit protection Excellent discharge curve and low resistance Excellent stability Long work life More safety CE FCC ROHS PSE Brand Name: DTK Capacity: 4400mAh/49Wh Cells QTY: 6 Voltage: 11.1V N.W.310g Battery Type: Li-ion ColorGray Compatible Laptop Brand: Dell Package List: Laptop Battery + Instructions