Electric vehicles (EVs) are propelled by an electric motor (or motors) normally powered by rechargeable battery packs. Electric motors have several advantages over internal combustion engines (ICEs):
- Energy efficient. Electric motors convert 75% of the electrical energy from the batteries to mechanical energy to move the wheel. Most internal combustion engines only convert 20% of it chemical energy to power up the wheel.
- Environmentally friendly. Electric vehicles emit no pollution nor greenhouse gases.
- Quiter. EVs also run more quietly than their combustion-powered counterparts.
- More reliability. Electric motors have fewer moving parts compared to ICEs. And they don't need fluids such as engine oil or anti-freeze.
Besides electric cars, electric motors have also been used for the propulsion of trains, lorries, aeroplanes, boats, motorcycles and scooters, and spacecrafts.
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