Genuine Dell 312-0589 Original Lithium Ion battery designed for Vostro 1500 and Inspiron 1720. This 9-cell battery has capacity of 85 WHr. There is no battery memory effect with a lithium-ion battery — you can charge the battery whenever you like without fear of reducing its charge capacity. • Chemistry: Li-Ion • Rating: 11.1V 85WHr (7660mAh) • Warranty: 1 Year •