Some plug-in hybrids have higher-capacity batteries and can go further on electricity than others. Electric-only operation usually occurs only at low speeds. Both the engine and electric motor are connected to the wheels and propel the vehicle under most driving conditions. For short trips, these vehicles might use no gasoline at all. The gasoline engine then generates electricity to power the electric motor. Series plug-ins can run solely on electricity until the battery runs down. The gasoline engine only generates electricity.
Only the electric motor turns the wheels. Series plug-in hybrids, also called Extended Range Electric Vehicles (EREVs). There are two basic plug-in hybrid configurations: They can store enough electricity to significantly reduce their petroleum use under typical driving conditions. Plug-in hybrids, sometimes called Plug-in Hybrid-Electric Vehicles (PHEVs), are hybrids with high-capacity batteries that can be charged by plugging them into an electrical outlet or charging station. A quick guide to the different kinds of hybrids and electric vehicles.
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