Still using the Halcyon 21W HID with E/O cord and several battery packs for multiple dives. Is there a LED light head than can be used with a 11.1 Volt 6.3 Ah battery pack?
If that LED head would have a similar form factor than the big Halcyon HID head, even better. I like having the option of hitting the cave gremlins with a big Delrin club in case I catch them in the act. Just kidding, but that big thing hangs always straight down when clipped off and a piece of inner tube holds a few arrows and cookies neatly around the flat side of the transformer housing for quick access.
There is nothing wrong with the HID light, IMO. I like the color, focus and spill. I deal with the fragility of the bulbs by having two light heads in my gear and carry a halogen bulb tube for the Halcyon head on each dive. Just getting a case of LED envy, I guess.