This idea would please my needs if ac corded. I don't like the wobble light: too big, too heavy, too expensive. Halogens suck too much energy, create too much heat in a room, are a fire hazzard, and I end up poping in bulbs like candy over the course of a paint job. I wonder if you could create a small cheap hid that runs on ac, be easy to carry with a ton of other equipment, be durable. Probably a 90 degree reflector, so you could put in a room corner and illuminate 2 walls with maximum lux. Price and size are important, since on a small job, we would need 4 of them.