BRTONG New Laptop Battery [li-ion 9-cell 73Whr 6600mAh] for Dell Inspiron 1501 6400 E1505 E1501 PP23LA PP20L Series- 12 Months Warranty Battery type:Li-ion; Capacity:6600mAh/73WH;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.24x7email 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.