11.10V,4400mAh,Li-ion, Replacement Laptop Battery for Dell XPS series. This laptop battery can replace the following part numbers of Dell: 312-1123, J70W7, JWPHF Voltage: 11.10V ///Capacity: 4400mAh Battery Type: Li-ion///Color: Black Dimension: 209.20 x 54.40 x 20.40 mm///Weight: 357.20 g