TAUPO New 9-Cell Laptop Battery Replacement for Dell Studio 1535 1536 1537 1555 1557 1558 PP33L PP39L - 12 Monthy Warranty Battery type: Li-ion; 9-cell; Capacity: 73wh; Voltage: 11.1V Compatible part numbers: A2990667 WU946 WU960 WU965 MT276 MT264 KM905 PW773 KM904 KM887 KM958 312-0702 312-0701 Brand New Replacement Product, Works as Genuine Parts 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