11.10V,4800mAh,Li-ion,Hi-quality Replacement Laptop Battery for Dell Studio XPS 13, Studio XPS 1340, Compatible Part Numbers: This replacement laptop battery can substitute the following part numbers of Dell 312-0773, P891C, T555C Voltage: 11.10V ///Capacity: 4400mAh Battery Type: Li-ion///Color: Black Dimension: 204.00 x 49.20 x 26.38 mm///Weight: 391.75 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty!