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EV charging glossary

Industry jargon

Charging curve

An EV charging curve shows how charging power changes during a charging session. It is usually plotted against time or state of charge and explains why a vehicle does not hold its headline peak charging power from empty to full. The vehicle's battery-management system changes allowable charging power as state of charge, battery temperature and other limits change. The EVSE can also impose its own voltage, current or power ceiling. Two vehicles connected to the same DC charger can therefore produce very different charging curves and total charging times.

Related terms

Charging rate

State of charge

Battery management system
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