Last year I interviewed Al Jacobson, the designer and manufacturer of the Black Box and Tuxedo battery system for flash units. I also purchased a unit for myself. I am really impressed with the quality of this unit and I am very pleased with how well it works. I fnd it too heavy to take on my extended trips, and will likely pick up the Tuxedo unit when I return from my trip to Turkey.
These units allow the photograper to feed constant power to the flash units without worrying about running out of batteries. In addition, the units can easily keep up with the camera, in fact you need to be concerned that the flashes don't burn themselves out!
This is a 20 minute interview in two parts, so I hope you enjoy it! Al is a very interesting guy!
PART 1
PART 2