The following summarizes the four primary types of EDVs and how they commonly function.
Some variances will occur from manufacturer to manufacturer. HEVs use a small electric
battery to supplement an ICE. The electric battery is recharged by the gasoline engine and
regenerative braking. PHEVs are dual-fuel vehicles, where the electric motor and/or the ICE
can propel the vehicle. PHEVs use a larger battery pack than HEVs and are charged directly
from the power grid to supplement a smaller ICE. EREVs are propelled by electric motors only.
When the propulsion battery is depleted, and ICE is used to power an electric generator that
provides electricity to the drive motors. Finally, BEVs have no ICE at all and are full EVs.
These vehicles must plug into the power grid to recharge.
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