If I charge my cell phone in my car as I drive, how much would it reduce my mpg (if anything at all).?

Answer 1

Charging your cell phone with your car battery will not affect your MPG at all. MPG is only affected by things that will cause you to use more gas.

Answer 2

I'll try and do this in layman's terms...

This is one of those yes and no questions.

Yes, it will reduce your gas mileage...imperceptibly . Any load on a vehicle's electrical system, no matter how slight, will cause an equivalent additional drag on the engine via the alternator. More fuel is then required by the engine to maintain its current speed (rpm). This is true regardless of what the extra loading amount is. So even the recharging of your cell phone will affect total overall fuel consumption.

Here's the "no" part: That amount of extra fuel required by your car, to power your cell charger, is so minuscule that you would not be able to measure it with an eyedropper. The simple act of turning your car heater fan on high for a few of minutes would result in far more fuel being used...and even this amount would be nigh near immeasurable. There is a similarity here to the effect a tidal power generator has on the Earth's rotation. It does indeed slow the Earth, but only by such a slight degree that the the most sensitive measuring devices in the world can barely detect it.

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Answer 3

I will not affect your MPG at all.That cell phone charger will work with the engine off.I do it all the time(i forget to charge the phone at night) when i get to work i just plug it in the car and does not even drain the battery.

Answer 4

It wouldn't affect your MPG. Your alternator and voltage regulator would be involved. Not your fuel system. Now if you have an electric car I don't know if it would affect your max battery charge range.

Answer 5

The current draw is so low that it will not affect your MPG

Answer 6

None, you alternator charges your battery and that's where the charger power comes from, so it wouldn't matter

Answer 7

It wouldnt