DTK 11.1V 6600mAh 9-Cell Replacement Laptop Battery for Dell Latitude E6400 E6410 E6500 E6510 Precision M2400 M4400 M4500 Notebook Battery type: Li-ion; Capacity: 6600mAh; Cells: 9-cell; Voltage: 11.1V. 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 Cells QTY9 Voltage(V)11.1V Capacity6600mAh/73Wh ColorBlack Dimension208*77*22mm N.W.462g TypeLi-ion