If you are travelling very slowly in PAS mode 1, then perhaps you will see a difference in distance. If your motor is only drawing 500 watts (and I will use 50 volts as it makes the math easy) then this is 10 amps. This would make it to where you are only charging at 1/5th the rate you are discharging. Break-even would be only running your motor at 100 watts. If you motor is only drawing 300 watts, then you could possibly see a 1/3rd extension of your distance. (100 Watts coming in through charge, 300 watts going out to motor. 100/300 or 1/3 power replacement rate).