I'll say they give enough motor skill to allow a user to move them if need be, even powered down. A feature designed to try and quickly evac them from warzones or dire situations. This essentially puts them within the normal weight limits of dragging or moving a creature. Something like a halfling probably wouldn't be able to budge them, but for you and Kessel, it's sort of like trying to move a very drunk unconscious friend out to your car.