11.10V,4400mAh,Li-ion, Replacement Laptop Battery for Dell Studio 1535, Studio 1536, Studio 1537, Studio 1555, Studio 1557, Studio 1558, This laptop battery can replace the following part numbers of Dell: 312-0701, A2990667, KM958, WU946 Voltage: 11.10V ///Capacity: 4400mAh Battery Type: Li-ion///Color: Black Dimension: 206.60 x 48.42 x 20.50 mm///Weight: 415.50 g