Yes, of course.
I have an EasyDriver to control my stepper motor through arduino. The stepper must carry loads between 1 to 3Kg. I can use a 12V 2A power supply or a 14.4V 2500mAHr battery if I'm out of home.
My purpose is, when stepper must carry light loads, to have an LCD menu where I can set up to supply less voltage to the driver to prolong battery life. As I read, lower voltage produces lower torque in my stepper motor driver.
EasyDriver has a potentiometer, but it only controls current, not voltage, and potentiometer will be put inside a box and will not be accessible.