Sure, The energy sword consists of a curved hilt, which houses an energy module and a device for projecting the plasma which forms the blade. The actual blade is composed of 2 partially ionized 'blades' of free moving electron based gas held in a blade-like form by two small magnetic-field generators built into the handle of the weapon. This forms and contains the oval shaped, ionized blades the weapon is famous for. That's the long way to explain it. You could've said, "The hilt of the sword houses a battery and a energy projection device, when activated two magnetic-field generators release this 'gas' into the shape of a blade."