laptop battery for Dell 1520 1.Grade A Li-ion 9 cell 2.15 months warranty 3.High quality & Perfect price ... DELL laptop battery Inspiron 1520, 1521, 1720, 1721, Vostro 1500, 1700 series 9 cells Detailed Specifications Competible informationsReplacement for following:312-0504, 312-0575 ... battery for DELL Inspiron 1520, 1521, 1720, 1721, Vostro 1500, 1700 series 9 cells