Battery – Electrochemical cells electrically connected in a series and/or parallel arrangement

 Battery Electric Vehicle (BEV) – A vehicle that utilizes chemical energy stored in rechargeable battery packs. Electric vehicles use electric motors instead of, or in addition to, internal combustion engines

 Battery Pack – A group of battery cells or modules connected in serial or parallel arrangement, fully configured as a unit meeting the voltage and packaging requirements of a vehicle

 Battery System – A completely functional complex battery which includes the battery pack and battery support equipment, such as thermal management and battery controls

 Charge – Conversion of electrical energy into chemical potential energy within a cell by the passage of a direct current. Coulombs or ampere-hours of energy available in a cell or battery

 Charger – An electrical device that converts alternating current energy to a regulated direct current voltage for replenishing the energy of an energy storage device (battery) and operating other vehicle electrical systems

 Connector – A conductive or inductive device that, by insertion into an inlet on the electric vehicle, establishes connection to an electric vehicle for the purpose of energy transfer and information

 Controller – A solid-state device that regulates the amount of power delivered to an electric vehicle’s traction motor

 Coupler – The device connected to the electric vehicle supply equipment that transfers power to the electric vehicle for charging the energy storage system and permits the exchange of information between the electric vehicle and the electric vehicle supply equipment

 Coupling – A mating vehicle inlet and connector set

 Electric Vehicle (EV) – An automotive-type vehicle for highway use, such as passenger automobiles, buses, trucks, vans, and the like, primarily powered by an electric motor that draws current from a rechargeable storage battery or other source of electric current

 Electric Vehicle Supply Equipment (EVSE) – The conductors, including the ungrounded, grounded, and equipment grounding conductors, the electric vehicle connectors, attachment plugs, and all other fittings, devices, power outlets, or apparatus installed specifically for the purpose of delivering energy from the premises wiring to the electric vehicle

 EV Connector – Off-board component used to interface with the vehicle-mounted EV inlet to supply power and provide communication interface

 EV Cord – The off-board cable containing the conductors to connect the EV plug with the EV power controller to provide power for the vehicle and communications during charge

 EV Inlet – Vehicle-mounted component which interfaces with the EV connector to receive power and provide communication interface

 Electric Vehicle Infrastructure (EVI) – All equipment and facilities required to generate, transmit, distribute, and deliver electricity to an EV

 Level I EVSE – Charging from a common electrical outlet, which is 120 volts in the United States. The maximum power supplied for Level I Charging shall conform to the values shown: Nominal Supply Voltage 120 V. AC single phase; Maximum Continuous Current 12 amps; Branch Circuit Protection 15 amps (minimum); Nominal Continuous Power 1.44 kVA

 Level II EVSE – High-power charging, which is 240 volts, 40 amps in the United States. The maximum power supplied for Level II Charging shall conform to the values shown: Nominal Supply Voltage 208-240 V. AC single phase; Maximum Continuous Current 32 amps; Branch Circuit Protection 40 amps; Nominal Continuous Power 6.66-7.68 kVA

 DC Fast Charging (formerly known as Level III EVSE) – Fast charging at 480 volts, 400 amps with three-phase power. This energy transfer method utilizes dedicated electric vehicle supply equipment capable of replenishing more than half of the capacity of an EV battery as quickly as in fifteen minutes. With this method, the electric vehicle accepts dc energy from an off-board charger. The maximum power supplied for dc fast charging equipment conforms to these values: Nominal Supply Voltage 600 Vdc (maximum); Maximum Continuous Current 400 amps; Branch Circuit Protection As Required; Nominal Continuous Power 160 kW dc

 Off-Board Charger – A charger with the intelligence and control in the charger stand, not on the vehicle

 On-Board Charger – A charger with the intelligence and control on the vehicle

 Plug-in Hybrid Electric Vehicle (PHEV) – A hybrid vehicle with rechargeable batteries that can be can be restored to full charge by connecting a plug to an external electric power source. A PHEV shares the characteristics of both a conventional hybrid electric vehicle, having an electric motor and an internal combustion engine; and of an all-electric vehicle, also having a plug to connect to the electrical grid

 Range – The maximum distance that an electric vehicle can travel on a single battery charge over a specified driving cycle to the battery manufacturer’s recommended maximum discharge level

 Time-of-Use Rates – Discounted electricity rates established by utilities to encourage use of electricity during off-peak hours

 Vehicle Inlet – The device on the electric vehicle into which the connector is inserted for energy transfer and information exchange. This is part of the charge coupling

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