11.4V, 4400mAh, Li-ion Battery fits Dell, Inspiron 1520, Inspiron 1521, 50.16WhBattery Fits Models: Inspiron 1520, Inspiron 1521, Inspiron 1720, Inspiron 1721, Vostro 1500, Vostro 1700 Battery Part Numbers: 0dy375, 0fk890, 0gk479, 0gr986, 0gr99, 0gr995, 0nr222, 0nr239, 0uw280, 312 0504, 312 0513, 312 0518, 312 0520, 312 0575, 312 0576, 312 0577, 312 0589, 312 0590, 312 0594, 312 0595, 451 10476, 451 10477, Dy375, Fk890, Fp282, Gk479, Gr986, Gr995, Nr222, Nr239, Tm980, Uw280 Our equivalent battery is made with premium cells and