how much power is required to run an electric car?
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There is a direct conversion between horsepower and watts: 745.7 watts is 1 horsepower. Car motors for modern vehicles range from about 50 horsepower to 500 horsepower or more. An average medium size family car might have a 150 HP motor. To duplicate that with an electric motor you would need 111,855 watts of power.
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If you can charge at home and work, this can double your daily range to around 500 miles so long as you know you can leave the car plugged in for long enough to charge the battery fully. ... The cost of electricity to power an EV is about a third of that for petrol or diesel, so you can save on daily commuting expenses.
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Watts is amps x volts. So if you have say a 600CCA (cold cranking amps) car battery, then it can provide about 600 x 12 = 7200 watts for a few seconds needed to start the car.
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For a typical electric car with a 60kWh battery and ~200 mile range: Charging at home: Costs about £8.40 for a full charge. Charging at work: Many employers will install workplace charging points and typically offer free access throughout the day.
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Starting the engine will require 250 amps for a half second, and the most current a 1.5-volt AA battery can produce is 10 amps. Given the above, you'd need to start with a string of eight AAs to get your necessary 12 volts.
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For electric vehicles, this requires about 10 kWh of electricity (Most EVs average between 3 & 4 miles per kWh. Charging an EV at 40 A (9.6 kW) means it will take a little more than one hour to charge to the minimum required daily amount, compared to 1 hour and 20 minutes at 30 A (7.2 kW).
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The electric cars available in Australia, generally have a real-world range in excess of 200km (not all BMW i3's though) so in theory you should manage most of the working week without a recharge.
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Watts are Volts x Amps so say you need 2400 watts to crank a car engine (about the same as an electric kettle) - then you could theoretically have that as 12v x 200 amps (2.4kW) or 120v x 20 amps (same 2.4kW) or even 240v x 10 amps (still 2.4kW) - but asking how many volts without knowing the current (amps) is ...
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The electric is about 13 cents per kWh or a cost of $13 for a full charge. The charge can keep a car going for about 300 miles, according to Tesla.
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The rule of thumb number used for energy required for EVs in normal driving is 25 KWH for 100 miles. Large cars will need more and small cars will need less.
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Summary. The cost to charge an electric car in the UK varies between home, work and public charging. For a typical electric car with a 60kWh battery and ~200 mile range: Charging at home: Costs about £8.40 for a full charge.
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Energy Efficiency Electric cars are far more energy efficient (85-90% efficient) than internal combustion engine cars (17-21%), which means that they use less energy to get you from A to B.
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How much energy is needed for a car to drive 1km? - Quora. A reasonable average is 5 km per kWH. Since a kWH is 3.6 MJ, this means about 720 kJ per km. A reasonable estimate of the absolute minimum energy is to assume no air friction (moving very slowly) and having only rolling friction.
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Electric cars are shockingly bad. ... EVs run on electricity from a battery which must be charged from, er, power stations that use fossil fuels. Since renewables contribute just a few per cent of the UK's energy (sometimes), nearly all our electricity comes from either nuclear or coal/oil/gas.
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Many Appliances Use Just as Much Power When Off Always leaving a laptop computer plugged in, even when it's fully charged, can use a similar quantity — 4.5 kilowatt-hours of electricity in a week, or about 235 kilowatt-hours a year. (Your mileage may vary, depending on model and battery.
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Electric-car Motors and Batteries. Electric cars can use AC or DC motors: If the motor is a DC motor, then it may run on anything from 96 to 192 volts. Many of the DC motors used in electric cars come from the electric forklift industry.
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An average electric car consumes approximately 0,20 kWh/km. On a daily basis, this makes approximately 47 kilometers of driving.