Compatible Brand: Dell Battery Type: Lithium-Ion (Li-on) Voltage: 10.8v (Compatible with 11.1v) Capacity: 4400mah Number of Cells: 6 Product Type: Unbranded / OEM generic Compatible Battery Part Number: PT434 PT437 KY477 PT435 KY477 KY265 PT436 KY266 KY268 Compatible Laptop Model: Dell Latitude E6400 Series Dell Latitude E6400 ATG Series Dell Latitude Series Dell Latitude E6510 Series Dell Latitude E6500 Series What's in the box 1 x Laptop Battery