11.10V 4000mAh Li-ion Hi-quality Replacement Laptop Battery for Dell Latitude E4200 This laptop battery can replace the following part numbers of Dell: 00009 312-0864 451-10644 453-10069 F586J R331H R640C R841C W343C W346C X784C Y082C Y084C Y085C Voltage: 11.10V ///Capacity: 4000mAh Battery Type: Li-ion///Color: Metallic Grey Dimension: 210.00 x 68.50 x 23.10 mm///Weight: 380.90 g