Dtk New High Performance Laptop Battery for Asus F52 F82 K40 K40lj K40ln K401j-e1 S K40e K50 K50ij K51 K60 K61 K6c11 K70 K70as K70as-x2a K7010 K7010-a1 P50 P81 F82 F83s Pr05c Pr05d Pr05e Pr05j Pr065 Pr066 Pr079 Pr088 Pr08s Pr08d X5d X5e X5c X5j X65 X66 X70 X87 X8a X8s X8d A32-f52 A32-f82 L0690l6 [6-cell 11.1v 4400mah] Notebook Battery Battery type: Li-ion; Capacity: 4400mAh; 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, 4400mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.