CSE&reg; New Laptop Battery for Dell Vostro PP36S PP36L 1320 2510 1310 1510 1520 Series, Fits P/N K738H T112C T114C T116C U661H N958C 312-0725 - 12 Months Warranty Extended life [Li-ion 9-cell 7800mAh/86Wh] Battery type: Li-ion; Capacity: 7800mAh/86WH; 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 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.