Brand New Li-ion Laptop Notebook Battery for Dell Vostro PP36S PP36L 1320 2510 1310 1510 1520 Series Capacity: 4400mAh 48WH; Voltage: 11.1V. Cells: 6-cell;Battery type: Li-ion 100% OEM compatible! Guaranteed to meet or exceed OEM specifications! Package Include: One Pc Laptop Battery Fit Laptop Models: Inspiron 1520,1521,1720,1721; Vostro: 1500,1700.