Ct0517, the voltage regulator is already in your PV motor controller. You will simply connect the battery in place of the wall-powered supply. Picture this---the PV motor runs on DC and the motor speed is controlled by the exact DC voltage fed to the motor. The controller is simply a voltage regulator that allows the user to change the DC voltage slightly in order to adjust the motor speed and then maintain it at a constant speed.
Salectric thanks for the info. let me understand something. I am not an electrician.
My term voltage regulator was probably the wrong word. How about voltage converter ?
The Platine motor is a DC motor with a voltage regulator.
The AC current from the wall is 120volts.
The Platine motor is doing a voltage conversion from AC to DC ?
Adding a battery is raw DC power.
What happens with the Platines voltage converter which is expecting AC current ?
Will I not fry the converter with raw DC power from a battery or does it just bypass it ?
Thanks.