Assuming a conservative 0.5 gallons per hour at idle. A gallon of unleaded gasoline has ~153,000 watt hours of energy. At 20% extraction efficiency, that’s 30,600 wh. That’s 15,300 watts being burned to charge a phone. A typical phone charger uses 5-20 watts.
Assuming a conservative 0.5 gallons per hour at idle. A gallon of unleaded gasoline has ~153,000 watt hours of energy. At 20% extraction efficiency, that’s 30,600 wh. That’s 15,300 watts being burned to charge a phone. A typical phone charger uses 5-20 watts.
Edit: updated numbers to use 20% efficiency