The Mesmetron power cell is a type of ammunition found in Fallout 3.
The Mesmetron power cell, as the name suggests, is used only by the Mesmetron. It's virtually the same in appearance as energy cells, but the tops are capped with blue coloring instead of yellow.
Weapon using this ammunitionEdit
This ammunition can also be obtained in Fallout: New Vegas through console commands although serves no purpose as the Mesmetron does not exist within the game files.