How Many Amps Does A Trolling Motor Draw - Web amps x volts = watts, or watts / amps = volts. At 12v the amp draw would be (1hp /.75% x 746w = 994.66whr / 12v = 82.8a). Web in order to approximate how long a certain motor will run on the water, you simply take the battery's amp hour. Take the watts you calculated and divide it by 746 watts (1 hp). You can reference the conductor gauge and circuit. Web (52 amps x 12v = 624 watts) this gives us 624 watts. Web the motor is only able to draw up to a specified amperage.
Web (52 amps x 12v = 624 watts) this gives us 624 watts. Take the watts you calculated and divide it by 746 watts (1 hp). Web the motor is only able to draw up to a specified amperage. Web amps x volts = watts, or watts / amps = volts. At 12v the amp draw would be (1hp /.75% x 746w = 994.66whr / 12v = 82.8a). You can reference the conductor gauge and circuit. Web in order to approximate how long a certain motor will run on the water, you simply take the battery's amp hour.