Anker Laptop Battery [9-cell / 7800mAh/87WH] for Dell Inspiron 13R (N3010) 14R (N4010) 14R (N4110) 15R (N5110) 17R (N7010) 17R (N7110) M501 M503 Series, fits J1KND 4T7JN FMHC10 - [Li-ion, 11.1V] 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, 8-hr x 5-weekday call support, 18-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. The actual operation time will depend on how much electricity is required by the device and how you use it.