CSEXCEL New Laptop Battery [Li-ion 9-cell 7800mAh/87WH] for Dell XPS M1330 1330 Dell Inspiron 13 1318 Fits 312-0844 312-0566 312-0567 TT485 WR050 C601H PU556 NT349 HG307 UM225 UM226 XT832 Battery type: Li-ion; Capacity: 7800mAh/87WH; 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.