CSE&reg; New Laptop Battery for Dell Inspiron 1525 1526 1545 PP29L PP41L Series, Fits P/N X284G M911 M911G GW240 RN873 K450N GP952 RU586 C601H 312-0844 - 12 Months Warranty [Li-ion 9-cell 11.1V 7800mAh/87Whr] 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.