CSE New Laptop Battery [Li-ion 9-cell 7800mAh/87WH] for Dell Latitude D531 D531N D820 D830, Precision M4300 Mobile Workstation, Precision M65 , Replacement for 310-9122 312-0393 312-0401 451-10308 451-10326 451-10410 DF192 DF230 DF249 FF232 GX047 XD736 YD624 YD626 CF623 - 12 Months Warranty 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.