OMCreate New Laptop Battery for Dell Studio WU946 1558 1555 1537 1535 PP39L PP33L 1536, alos fits P/N WU946 MT264-12 Months Warranty Battery type: Li-ion; Voltage: 11.1V; Cells: 6-cell; Operation time: 1.5 - 3 hours. Actual operation time varies depending on types of the device and the way it is used. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Compatible part number: 312-0701 / 312-0702 / A2990667 / KM958 / KM965 / MT264 / KM904 / KM905 / MT264 / MT276 / PW773 / WU946 / WU960 / WU965 Compatible Models: Dell Studio 1535 / 1536 / 1537 / 1555 / 1557 / 1558 / PP33L / PP39L 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.