The battle station includes a personal energy shield, an electropole, and an energy catapult:
The personal energy shield has always appealed to me. It's a nice shape, it's a cool material (energy!), and it's a pretty purple. What's not to like?
And it seems that no matter how advanced the weaponry becomes, everyone still loves a good (energy) catapult:
As usual, don't hit your brother in the eye with the energy ball:
Photo courtesy of aus36.
See Wookieepedia for more information about the electropole, the personal energy shield, and the energy catapult.
Lego parts information for this build may be found at Bricklink.