TAUPO New 6-Cell Laptop Battery Replacement for Dell Studio WU946 1558 1555 1537 1535 PP39L PP33L 1536, fits P/N WU946 MT264-12 Months Warranty Battery type: Li-ion; 6-cell; Capacity: 49Wh; Voltage: 11.1V Compatible part numbers: A2990667 WU946 WU960 WU965 MT276 MT264 KM905 PW773 KM904 KM887 KM958 312-0702 312-0701 100% New from Manufacturer. Rechargeable Up to 500 times over life of battery Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability CE-/FCC-/RoHS-Certified for safety, 12 months hassle-free warranty