Check the listing for details. 55A HHO PWM CCPWM constant current hydrogen cell controller 12V 24V. Condition: New. Listed at 58.99 USD. Looking to enhance the performance and reliability of your HHO hydrogen or galvanic anodizer or decarbonizer system?. Peak current: 55A ( above this load the PWM dasable the output gives you a sign because of the large load).