What battery tubes would fit a Dereelight DBS Asperical head?

Would love to have a flashlight using a DBS Asperical head but I don't want to necessarily spend the $94 for the full light, are there any cheaper hosts that I could buy and use the head with, like a SolarForce L2 or UltraFire 50Xb series? It also looks possible that it only works with the Dereelight bodies so if that's the case let me know that as well. Thanks.

Turns out as I read it I am dumb. The head is just that, a head, contains no pill, LED etc. so you have to have the original light and use that pill or buy the aspheric light itself, D'OH!