11.1V, 4400mAh, Li-ion Battery fits Dell, Inspiron 1318, Xps M1330, 48.84WhBattery Fits Models: Inspiron 1318, Xps M1330, Xps M1350 Battery Part Numbers: 312 0566, 312 0739, 451 10473, Tt485, Wr050 If you are worried about the quality or the performance of the products from Cameronsino, take a look at the reviews from our customers. Sound quality is assured as the products are manufactured to a very high standard Cameron Sino batteries have manufactured generic batteries for many years. We offer the freshest batteries