BRTONG New Laptop Battery for Dell Studio 17 1745 1747 1749 P02E P02E001 P02E002 Series, Compatible Part Number: N856P U164P M905P U150P - 12 Months Warranty [Li-ion 9-Cell 6600mAh/73WH] Battery type: Li-ion; Capacity: 6600mAh/73WH; Cells: 9-cell; Voltage: 11.1V. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support,12-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time: the actual operation time will depend on how much electricity is required by the device and how you use it.