I have one in a Mag 3D body using Fivemega's 9AA>3D battery holder. Using Titanium brand 1800s I think. I prefer this size over the giant 6D body or whatever it is on the website.
Its one of my favorites. Lots of light, more of a flood that a spot. If you want pure throw, go with an incan like a Mag85, but for a general usage light in the short and medium ranges this is a good one. Reflectors are held in place only by the pressure of the lens, which isn't optimal, but there really is little to complain about. Can't tell you about runtime as I use mine for short durations and then top off the batteries.
best regards