Yes, they are. It takes 3 D-Cells for its original purpose, but it's most famous use probably doesn't require any batteries. Instead its power source consists of a diatium power cell.
I'll give everybody else a little time to try and come up with the item, and if I don't have anything by tomorrow evening I'll give the answer and post another item/place.
Look closely at the item, folks, and you can see the lightsaber in it. Those things are gold to Star Wars costumers.
The Graflex 3-cell Flash Gun, originally used for large-format photography, was chosen for use as a lightsaber. There were, of course, several lightsabers used in the different movies. The most recognizable of them is the Luke Skywalker lightsaber, either Episode IV or Episode V.