DTK High Performance New Laptop Battery for Dell Precison M4600 M4700 M6600 M6700 P/N:FV993 PG6RC R7PND 0TN1K5 [Li-ion 11.1V 6Cell 5200mAh] - 12 Month Warranty Battery type: Li-ion; Capacity: 5200mAh; Cells: 6-cell; Voltage: 11.1V. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. 24 x 7 email support, 12-month hassle-free warranty Operation time for standard batteries(6-cell, 5200mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.