Laptop Battery for Gateway 400VTX, Gateway 450E, Gateway 450RGH, Gateway 450ROG, Gateway 450SP, Gateway 450SX4, Gateway 450X, Gateway 450xl (6-Core 11.1v 5200mAh)(134.8*98.4*20) NOT Compatible with 14.4V & 14.8V battery With certificate of conformity EC Council Electromagnetic Compatibility. High grade quality and certified by CE and RoHS Voltage(V):11.1, Capacity(mAh):6 Cells 5200MAH, N.M.(g):291 (Note:For your notebook,remember to select the battery quality assured. Because the inferior battery will be seriously harmful to your notebook.Power your Laptop with our Excellent Battery.)