From everything I have researched the answer is yes. The most the controller you are using will ever draw from the batteries is 25 amps. So you are perfectly fine using that setup as long as the motor and the controller you are using are both rated for 72 volts. You can use more amp /hours to gain distance. It' s not the amps that will fry your controller it's using more volts than your setup is rated for. hopes this helps.