Genuine Original Dell 312-0576/310-0590 Battery designed for Vostro 1500, Inspiron 1520/1720. Lithium-Ion batteries are longer lived than conventional batteries and do not require replacement as often. 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 5000mAh 56WHr • Warranty: 1 Year